CN111575610B - SmFeB amorphous soft magnetic alloy material and preparation method thereof - Google Patents
SmFeB amorphous soft magnetic alloy material and preparation method thereof Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 203
- 229910001004 magnetic alloy Inorganic materials 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 128
- 230000006698 induction Effects 0.000 claims abstract description 38
- 238000003723 Smelting Methods 0.000 claims abstract description 36
- 229910052796 boron Inorganic materials 0.000 claims abstract description 34
- 230000005291 magnetic effect Effects 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 5
- 230000000171 quenching effect Effects 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims description 86
- 238000000137 annealing Methods 0.000 claims description 68
- 239000000203 mixture Substances 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 61
- 238000010438 heat treatment Methods 0.000 claims description 60
- 229910052802 copper Inorganic materials 0.000 claims description 57
- 238000001816 cooling Methods 0.000 claims description 43
- 230000001681 protective effect Effects 0.000 claims description 34
- 239000002994 raw material Substances 0.000 claims description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 238000005507 spraying Methods 0.000 claims description 31
- 229910052718 tin Inorganic materials 0.000 claims description 31
- 239000012856 weighed raw material Substances 0.000 claims description 30
- 230000032683 aging Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 83
- 239000000126 substance Substances 0.000 description 31
- 229910052742 iron Inorganic materials 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 23
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- 229910052738 indium Inorganic materials 0.000 description 6
- 229910052732 germanium Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
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- 229910017082 Fe-Si Inorganic materials 0.000 description 1
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- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
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- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
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Abstract
The invention relates to a SmFeB amorphous soft magnetic alloy material, belonging to the technical field of magnetic materials. The SmFeB amorphous soft magnetic alloy material is formed by smelting and quenching Fe-based alloy comprising Sm, Co, B and Si; the Fe-based alloy contains 3.5-11.8 at% of Sm, 1.5-5.0 at% of Co, 5.8-15.0 at% of B, 5.0-15.0 at% of Si and more than 60at% of Fe, and the preparation method of the SmFeB amorphous soft magnetic alloy material is further provided. The SmFeB amorphous soft magnetic alloy material has higher saturation magnetic induction intensity, high magnetic conductivity and low hysteresis coefficient, and has good application prospect in the fields of components such as switch power supplies, communication transformers, magnetic heads, magnetic sensors and the like.
Description
Technical Field
The invention relates to the technical field of magnetic materials, in particular to a SmFeB amorphous soft magnetic alloy material and a preparation method thereof.
Background
The soft magnetic alloy is a magnetic alloy material with high magnetic conductivity and low coercive force in a weak magnetic field, and is mainly applied under the condition of alternating current magnetization, so that very low power loss is required. The soft magnetic alloy is widely applied to the technical fields of communication, sensing and the like as an iron core of a motor, a transformer, a grade head of an electromagnet and the like, and along with the development of microelectronic technology, the application of soft magnetic alloy materials in the field of precise electronic components is increasingly wide, and the performance requirements on the soft magnetic alloy materials are also increasingly improved.
In order to meet the requirements of different applications, a variety of soft magnetic alloys have been developed in the prior art, and the alloys can be divided into crystal alloys such as Fe-Si alloy, Fe-Al alloy, Fe-Ni alloy, Fe-Si-Al alloy and the like according to the elements of the alloy. Since the 60's of the 20 th century, people began to prepare amorphous soft magnetic alloys by melt-spinning and roller-quenching. The amorphous soft magnetic alloy has good mechanical property and corrosion resistance because of no defects such as crystal boundary, dislocation and the like, and the amorphous state is disordered in a long-range and ordered in a short-range and has good magnetic property; and because the resistivity of the amorphous soft magnetic alloy is higher, the eddy current loss of the amorphous soft magnetic alloy is obviously reduced relative to that of a crystal magnetic material, and the high-frequency magnetic performance of the amorphous soft magnetic alloy is far better than that of the crystal magnetic material.
One of the common points of the chemical compositions of the amorphous soft magnetic alloys that have been found so far is that they both comprise two types of elemental compositions, one being a ferromagnetic element (Fe, Co, Ni, etc. or a combination thereof) and the other being a metalloid element (Si, B, C, etc.). By adding such a metalloid element to a ferromagnetic element, the melting point of the alloy can be significantly reduced, and the atoms of the alloy are more difficult to move when the alloy is in a liquid state and more difficult to align when the alloy is cooled, that is, the alloy is more easily "frozen" into an amorphous state. The alloy is required to have high hysteresis coefficient in the application of precision electronic components, such as a magnetostrictive sensor utilizing magnetization deformation, a pulse signal generated by utilizing the Barkhausen effect and the like. Soft magnetic alloys containing Sm are also disclosed in the prior art, but the Sm content is high, so that the cost is high, and the saturation magnetic induction (Bs) is low, so that the development and application of products are limited.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an SmFeB amorphous soft magnetic alloy material.
The first aspect of the invention relates to a SmFeB amorphous soft magnetic alloy material, which is an amorphous alloy formed by smelting and quenching Fe-based alloy comprising Sm, Co, B and Si; the Fe-based alloy contains 3.5 to 11.8at% of Sm, 1.5 to 5.0at% of Co, 5.8 to 15.0at% of B, 5.0 to 15.0at% of Si, and 60at% or more of Fe.
Wherein the Fe-based alloy is Fe-Sm-Co-M1-M2Elemental composition of-B-Si, M1Is at least one of Mo and Cr; m2Is at least one of Al, In, Sn, Ge and Cu, M2Sn and Cu are preferred.
Wherein the Fe-based alloy contains 0.7 to 1.2at% of M10.1 to 2.0at% of M2。
Wherein the atomic percentage of Sm in the Fe-based alloy is greater than the atomic percentage of Co.
Wherein the amorphous soft magnetic alloy material is a strip.
Wherein the thickness of the strip is 10-100 μm.
Wherein the amorphous soft magnetic alloy material is annealed at a low temperature.
Wherein the saturation induction of the amorphous soft magnetic alloy materialThe strain strength Bs is 1.6-1.9T, the coercive force Hc is less than 50A/m, and the hysteresis expansion coefficient lambdas is 5.0 multiplied by 10-6Hereinafter, it is preferably 3.0 × 10-6More preferably 1.0X 10-6The following.
Wherein the content of Sm in the Fe-based alloy is preferably 3.5 to 8.0at%, more preferably 3.7 to 6.0 at%.
Wherein the content of Co in the Fe-based alloy is preferably 1.8-4.0 at%.
Wherein the content of B in the Fe-based alloy is preferably 8.0 to 12.0 at%.
Wherein the Si content in the Fe-based alloy is preferably 5.0 to 12.0 at%.
The content of Fe in the Fe-based alloy is preferably 65at% or more, and more preferably 70.0at% or more.
The second aspect of the invention also relates to a preparation method of the SmFeB amorphous soft magnetic alloy material, which comprises the following steps:
(1) weighing raw materials of a Fe-based alloy, wherein the Fe-based alloy contains 3.5-11.8 at% of Sm, 1.5-5.0 at% of Co, 5.8-15.0 at% of B, 5.0-15.0 at% of Si and more than 60at% of Fe;
(2) preparing the weighed raw materials in a crucible, placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain mother alloy molten liquid;
(3) spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain an amorphous strip;
(4) annealing the amorphous strip in a vacuum annealing furnace in an atmosphere of 80v% NH3+20v%H2The temperature of the mixed atmosphere is 300-350 ℃, and then the mixed atmosphere is slowly cooled to room temperature along with the furnace;
(5) and carrying out aging treatment on the annealed amorphous strip.
Wherein the Fe-based alloy is Fe-Sm-Co-M1-M2Elemental composition of-B-Si, M1Is at least one of Mo and Cr; m2Is at least one of Al, In, Sn, Ge and Cu, M2Sn and Cu are preferred.
Wherein the total pressure of the mixed atmosphere is 100 Pa-3 kPa.
The third aspect of the invention also relates to the application of the SmFeB amorphous soft magnetic alloy material.
The amorphous soft magnetic alloy material is used for a switching power supply, a communication transformer, a magnetic head and a magnetic sensor.
Compared with the prior art, the SmFeB amorphous soft magnetic alloy material has the following beneficial effects:
the SmFeB amorphous soft magnetic alloy material has low Sm content and NH content3And H2The mixed atmosphere medium-low temperature annealing treatment can obtain higher saturation magnetic induction intensity and high magnetic conductivity, and further can obtain low coercive force and hysteresis expansion coefficient through the control of the added elements, thereby having good application prospect in the field of components such as switch power supplies, communication transformers, magnetic heads, magnetic sensors and the like.
Drawings
Fig. 1 is an XRD diffraction pattern of the SmFeB-based amorphous soft magnetic alloy material according to the example of the present invention.
Detailed Description
The SmFeB-based amorphous soft magnetic alloy material of the present invention will be further described with reference to the following specific examples to assist those skilled in the art in more complete, accurate and thorough understanding of the inventive concept and technical solution of the present invention.
The invention provides an SmFeB amorphous soft magnetic alloy material, which is an amorphous soft magnetic alloy material formed by smelting and quenching Fe-based alloy comprising Sm, Co, B and Si. The Fe-based alloy has a composition mainly containing Fe, mainly containing Sm and Co, and mainly containing M1、M2Metal additive elements, and B and Si are essential elements for forming amorphous alloy, wherein M1Is at least one of Mo and Cr, M2Is at least one of Al, In, Sn, Ge and Cu. The SmFeB amorphous soft magnetic alloy material can have the element composition of Fe-Sm-Co-M1-M2-B-Si. Specifically, in the amorphous soft magnetic alloy material, the content of Sm is 3.5-11.8 at%, and the content of Co is 1.5-5.0at%, 5.8 to 15.0at% of B, 5.0 to 15.0at% of Si, 0.7 to 1.2at% of M10.1 to 2.0at% of M2And 60at% or more of Fe. Wherein the content of Sm is preferably 3.5 to 8.0at%, more preferably 3.7 to 6.0 at%; the content of Co is preferably 1.8-4.0 at%; the content of B is preferably 8.0-12.0 at%; the content of Si is preferably 5.0-12.0 at%; the content of Fe is preferably 65at% or more, and more preferably 70.0at% or more. The amorphous soft magnetic alloy material of the SmFeB system has the Curie temperature Tc of 688-810K after annealing, has higher saturation magnetic induction intensity Bs and high magnetic conductivity mu after annealing and aging treatment, and keeps low hysteresis expansion coefficient lambda s.
In the present invention, Mo and/or Cr is selected as M in the composition system of SmFeB1The element not only improves the amorphous magnetic stability, but also can obtain low hysteresis coefficient lambdas through the adjustment of the components and the content. By selecting at least one of Al, In, Sn, Ge and Cu as M2In particular M2The choice of Sn and Cu improves the stability of the amorphous state, enables high permeability μ to be obtained after annealing and ageing, and reduces losses.
The SmFeB amorphous soft magnetic alloy material is formed by smelting and quenching Fe-based alloy. Selecting metal or alloy raw materials, firstly mixing the raw materials according to the atomic percentage of the chemical composition, then smelting, then spraying the mixture onto a rotating copper roller to obtain a strip, and then putting the strip into a vacuum annealing furnace (the atmosphere is 80v% NH)3+20v%H2The total air pressure is 100 Pa-3 kPa), the annealing temperature is 300-350 ℃, the time is 10min, and then the aging treatment is carried out for 100 hours at 150 ℃. The thickness of the strip is 10-100 μm, and the thickness of the samples in the examples and the comparative examples is about 30 μm. The XRD patterns (composition: Fe) of the soft magnetic alloy materials of 3 embodiments of the present invention are shown in the sequence from bottom to top in FIG. 170.5-Sm5.0-Co2.1-Mo0.9-Sn1.0-Cu0.5-B12.0-Si8.0、Fe70.5-Sm5.0-Co2.1-Cr0.9-Sn1.0-Cu0.5-B12.0-Si8.0、Fe70.5-Sm5.0-Co2.1-Mo0.5-Cr0.4-Sn1.0-Cu0.5-B12.0-Si8.0) The results show that the alloy structure is amorphous after annealing and aging treatment. Preferably, the saturation induction density Bs of the amorphous soft magnetic alloy material obtained by the invention is 1.6-1.9T, and the hysteresis expansion coefficient lambdas is 5.0 multiplied by 10-6Hereinafter, it is preferably 3.0 × 10-6More preferably 1.0X 10-6The following.
Example 1
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 300 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 2
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Cr0.9-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 300 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 3
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.5-Cr0.4-Sn1.0-Cu0.5- B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 300 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 4
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-Al1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Al and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 300 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 5
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-In1.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo and In were weighed respectively so as to satisfy the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) Will be described inAmorphous strip in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 6
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-Cu1.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 7
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-Sn1.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo and Sn were weighed so as to satisfy the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 8
The atomic composition of the soft magnetic alloy material prepared in this example is Fe65.3-Sm9.0-Co3.0-Mo1.2-Ge1.5-B10.0-Si10.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo and Ge were weighed out separately so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 9
The atomic composition of the soft magnetic alloy material prepared in this example is Fe65.3-Sm9.0-Co3.0-Cr1.2-Sn1.5-B10.0-Si10.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Cr and Sn were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 10
The atomic composition of the soft magnetic alloy material prepared in this example is Fe65.3-Sm9.0-Co3.0-Cr1.2-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 11
The atomic composition of the soft magnetic alloy material prepared in this example is Fe65.3-Sm9.0-Co3.0-Mo0.7-Cr0.5-Sn1.0-Cu0.5- B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 12
The atomic composition of the soft magnetic alloy material prepared in this example is Fe65.3-Sm9.0-Co3.0-Mo1.2-Sn1.0-Cu0.5- B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 13
The atomic composition of the soft magnetic alloy material prepared in this example is Fe72.5-Sm3.5-Co1.8-Mo0.7-Sn0.8-Cu0.7-B15.0-Si5.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 14
The atomic composition of the soft magnetic alloy material prepared in this example is Fe72.5-Sm3.5-Co1.8-Cr0.7-Sn0.8-Cu0.7-B15.0-Si5.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 15
The atomic composition of the soft magnetic alloy material prepared in this example is Fe72.5-Sm3.5-Co1.8-Mo0.5-Cr0.2-Sn0.8-Cu0.7- B15.0-Si5.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2The total air pressure is 1000 Pa), annealing treatment is carried out for 10min, the temperature is 350 ℃, and then furnace slow cooling is carried out to the room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 16
The chemical formula of the amorphous soft magnetic alloy material prepared by the embodiment is Fe71.9-Sm4.0-Co1.8-Mo0.8-Sn0.8-Cu0.7-B10.0-Si10.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 17
The atomic composition of the soft magnetic alloy material prepared in this example is Fe72.5-Sm3.5-Co1.8-Cr0.7-Sn0.8-Cu0.7-B15.0-Si5.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 18
The atomic composition of the soft magnetic alloy material prepared in this example is Fe72.5-Sm3.5-Co1.8-Mo0.5-Cr0.2-Sn0.8-Cu0.7- B15.0-Si5.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 19
The atomic composition of the soft magnetic alloy material prepared in this example is Fe60.8-Sm11.8-Co4.2-Mo1.2-Sn1.0-Cu1.0-B8.0-Si12.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 20
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-Al1.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo and Al were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Example 21
The atomic composition of the soft magnetic alloy material prepared in this example is Fe70.5-Sm5.0-Co2.1-Mo0.9-In1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, In and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 1
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe72.7-Sm2.0-Co3.0-Mo0.8-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) And (3) annealing the amorphous strip in a vacuum annealing furnace (Ar protective atmosphere, 2000 Pa) for 10min at the temperature of 350 ℃, and then slowly cooling to room temperature along with the furnace.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 2
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe73.7-Sm1.0-Co3.0-Mo0.8-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) And (3) annealing the amorphous strip in a vacuum annealing furnace (Ar protective atmosphere, 2000 Pa) for 10min at the temperature of 350 ℃, and then slowly cooling to room temperature along with the furnace.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 3
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe64.5-Sm3.0-Co10.0-Mo1.0-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) And (3) annealing the amorphous strip in a vacuum annealing furnace (Ar protective atmosphere, 2000 Pa) for 10min at the temperature of 350 ℃, and then slowly cooling to room temperature along with the furnace.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 4
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe70.5-Sm5.0-Co2.1-Nb0.9-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Nb, Sn and Cu were weighed out respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 5
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe70.5-Sm5.0-Co2.1-Zr0.9-Sn1.0-Cu0.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Zr, Sn and Cu were weighed out respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) And (3) annealing the amorphous strip in a vacuum annealing furnace (Ar protective atmosphere, 2000 Pa) for 10min at the temperature of 350 ℃, and then slowly cooling to room temperature along with the furnace.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 6
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe70.5-Sm5.0-Co2.1-Ti0.9-Al1.5-B12.0-Si8.0。
The preparation method of this comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Ti, Sn and Cu were weighed respectively so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) The amorphous strip was placed in a vacuum annealing furnace (atmosphere 80v% NH)3+20v%H2Total pressure 2000 Pa), annealing for 10min at 350 deg.C, and furnace-cooling to room temperature.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
Comparative example 7
The atomic composition of the soft magnetic alloy material prepared by the comparative example is Fe70.5-Sm5.0-Co2.1-Mo0.5-Cr0.4-Sn1.0-Cu0.5- B12.0-Si8.0。
The preparation method of the comparative example is as follows:
(1) the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu were weighed so as to conform to the alloy composition of the above chemical formula.
(2) And (2) preparing the weighed raw materials in a crucible, then placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain the master alloy molten liquid.
(3) And spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain the amorphous strip.
(4) And (3) annealing the amorphous strip in a vacuum annealing furnace (the atmosphere is argon and 300 Pa) for 10min at the temperature of 350 ℃, and then slowly cooling to room temperature along with the furnace.
(5) The annealed amorphous ribbon was aged at 150 ℃ for 100 hours and then cooled to room temperature.
For the samples of examples and comparative examples, the saturation magnetic inductivity Bs, the coercive force Hc and the maximum magnetic permeability μ were measured with open-circuit samples according to GB/T13012-2008 "measuring method of DC magnetic energy of Soft magnetic Materialm. Measuring hysteresis coefficient by small angle magnetic rotation method, and measuring loss P under conditions of 0.5T and 20kHz0.2/20kThe results are shown in Table 1.
Table 1.
For those skilled in the art, the specific embodiments are only exemplary descriptions of the present invention, and it is obvious that the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial modifications made by the technical solution of the present invention are within the protection scope of the present invention.
Claims (13)
1. An SmFeB amorphous soft magnetic alloy material is characterized in that: smelting and quenching Fe-based alloy comprising Sm, Co, B and Si to form amorphous soft magnetic alloy material, wherein the Fe-based alloy is Fe-Sm-Co-M1-M2An element composition of-B-Si comprising 3.5 to 11.8at% of Sm, 1.5 to 5.0at% of Co, 5.8 to 15.0at% of B, 5.0 to 15.0at% of Si, 0.7 to 1.2at% of M10.1 to 2.0at% of M2And more than 60at% of Fe, M1Is Mo and/or Cr, M2Sn and Cu; the saturation magnetic induction intensity Bs of the amorphous soft magnetic alloy material is 1.6-1.9T, the coercive force Hc is below 50A/m, and the magnetostriction coefficient lambda s is 5.0 multiplied by 10-6The following.
2. A SmFeB-based amorphous soft magnetic alloy material according to claim 1, wherein: the amorphous soft magnetic alloy material is a strip material.
3. A SmFeB-based amorphous soft magnetic alloy material according to claim 2, wherein: the thickness of the strip is 10-100 mu m.
4. A SmFeB-based amorphous soft magnetic alloy material according to claim 2, wherein: and annealing the amorphous soft magnetic alloy material at a low temperature.
5. A SmFeB-based amorphous soft magnetic alloy material according to claim 1, wherein: the content of Sm in the Fe-based alloy is 3.5-8.0 at%.
6. A SmFeB-based amorphous soft magnetic alloy material according to claim 5, wherein: the content of Sm is 3.7-6.0 at%.
7. A SmFeB-based amorphous soft magnetic alloy material according to claim 1, wherein: the content of Co in the Fe-based alloy is preferably 1.8-4.0 at%.
8. A SmFeB-based amorphous soft magnetic alloy material according to claim 1, wherein: the content of B in the Fe-based alloy is preferably 8.0-12.0 at%.
9. A SmFeB-based amorphous soft magnetic alloy material according to claim 1, wherein: the content of Si in the Fe-based alloy is preferably 5.0 to 12.0 at%.
10. A method for preparing SmFeB amorphous soft magnetic alloy material is characterized in that: the saturation magnetic induction intensity Bs of the amorphous soft magnetic alloy material is 1.6-1.9T, the coercive force Hc is below 50A/m, and the hysteresis expansion coefficient lambda s is 5.0 multiplied by 10-6The following;
the preparation method comprises the following steps:
(1) weighing raw materials of Fe-based alloy, wherein the Fe-based alloy contains 3.5-11.8 at% of Sm, 1.5-5.0 at% of Co, 5.8-15.0 at% of B, 5.0-15.0 at% of Si, and 0.7-1.2 at% of M10.1 to 2.0at% of M2And 60at% or more of Fe; m1Is Mo and/or Cr, M2Sn and Cu;
(2) preparing the weighed raw materials in a crucible, placing the crucible in a high-frequency induction heating furnace, vacuumizing, and introducing Ar protective atmosphere for heating and smelting to obtain mother alloy molten liquid;
(3) spraying the mother alloy molten liquid onto a rotating copper roller for rapid cooling to obtain an amorphous strip;
(4) annealing the amorphous strip in a vacuum annealing furnace in an atmosphere of 80v% NH3+20v%H2The temperature of the mixed atmosphere is 300-350 ℃, and then the mixed atmosphere is slowly cooled to room temperature along with the furnace;
(5) and carrying out aging treatment on the annealed amorphous strip.
11. The method for preparing an SmFeB-based amorphous soft magnetic alloy material according to claim 10, wherein: the total pressure of the mixed atmosphere is 100 Pa-3 kPa.
12. Use of the SmFeB amorphous soft magnetic alloy material according to any one of claims 1 to 9 in switching power supplies, communication transformers, magnetic heads and magnetic sensors.
13. Use of the SmFeB-based amorphous soft magnetic alloy material prepared by the preparation method according to claim 10 or 11 in switching power supplies, communication transformers, magnetic heads and magnetic sensors.
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