CN117821800A - High-strength tin alloy and preparation method thereof - Google Patents
High-strength tin alloy and preparation method thereof Download PDFInfo
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- CN117821800A CN117821800A CN202410062400.9A CN202410062400A CN117821800A CN 117821800 A CN117821800 A CN 117821800A CN 202410062400 A CN202410062400 A CN 202410062400A CN 117821800 A CN117821800 A CN 117821800A
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- 229910001128 Sn alloy Inorganic materials 0.000 title claims abstract description 140
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 33
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052718 tin Inorganic materials 0.000 claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 16
- 239000010936 titanium Substances 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 15
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 34
- 239000000956 alloy Substances 0.000 claims description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 22
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 15
- 239000011777 magnesium Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 239000011574 phosphorus Substances 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 14
- 230000000171 quenching effect Effects 0.000 claims description 14
- 230000032683 aging Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 9
- 239000011135 tin Substances 0.000 claims description 9
- 229910052684 Cerium Inorganic materials 0.000 claims description 8
- 238000007731 hot pressing Methods 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims description 7
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 6
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 239000006104 solid solution Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 abstract description 6
- 238000011056 performance test Methods 0.000 description 8
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000007873 sieving Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0483—Alloys based on the low melting point metals Zn, Pb, Sn, Cd, In or Ga
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The application relates to the technical field of tin alloy, and particularly discloses a high-strength tin alloy and a preparation method thereof. A high-strength tin alloy and a preparation method thereof comprise the following raw materials in parts by weight: 30-50 parts of tin, 15-25 parts of copper, 1-3 parts of zinc, 0.3-0.5 part of titanium, 0.5-0.8 part of rare earth element, 3-5 parts of antimony and 3-5 parts of lithium. According to the high-strength tin alloy and the preparation method thereof, the hardness and strength of a tin alloy metal matrix are improved by adding a proper amount of zinc and lithium into a tin alloy system, and the grain size of the tin alloy system is reduced by adding a proper amount of rare earth elements into the tin alloy system, so that the grain distribution is more uniform, the compactness of the tin alloy system is enhanced, and the strength and hardness of the tin alloy are further enhanced.
Description
Technical Field
The application relates to the technical field of tin alloys, in particular to a high-strength tin alloy and a preparation method thereof.
Background
The tin alloy is an alloy formed by taking tin as a matrix and adding other metal elements, has good corrosion resistance and friction reduction capability, and can be applied to the fields of manufacturing various metal materials, such as ships, automobiles, buildings and the like.
When tin alloy is used as solder in the welding of new energy electronic instrument components, in the heat radiator of new energy automobile and the like, the metal workpiece made of tin alloy is easy to deform in the processing and use process because the strength of the tin alloy is lower, so that the service life of the tin alloy product is shortened.
Disclosure of Invention
In order to improve the strength of tin alloys, the present application provides a high strength tin alloy and a method of making the same.
In a first aspect, the present application provides a high strength tin alloy, which adopts the following technical scheme:
the high-strength tin alloy comprises the following raw materials in parts by weight: 30-50 parts of tin, 15-25 parts of copper, 1-3 parts of zinc, 0.3-0.5 part of titanium, 0.5-0.8 part of rare earth element, 3-5 parts of antimony and 3-5 parts of lithium.
By adopting the technical scheme, a proper amount of rare earth elements are added into a tin alloy system, so that a high-melting-point compound can be generated, the crystal lattice size of the alloy is reduced, alloy grains are refined, the grains are distributed more uniformly, and the strength of the alloy is improved. Meanwhile, the addition of the rare earth elements can increase the compactness of the tin alloy, and through stronger affinity between the rare earth elements and each metal element in the tin alloy system, each metal in the tin alloy system can be promoted to be more uniformly combined together, the grain boundary corrosion depth of the alloy is reduced, and the corrosion resistance of the tin alloy is improved. Proper amounts of zinc, lithium and titanium are added into a tin alloy system, so that the strength and hardness of the tin alloy can be improved, and the peak aging hardness of the tin alloy can be improved.
Preferably, the rare earth element is a mixture of lanthanum, cerium and yttrium.
By adopting the technical scheme, lanthanum, cerium and yttrium are used as rare earth elements, so that the lattice size of the alloy can be reduced, alloy grains are refined, and the strength of the tin alloy is improved. Cerium can improve the tensile strength and corrosion resistance of the tin alloy, and lanthanum and cerium can effectively reduce the oxygen evolution rate of the tin alloy and reduce the oxidation corrosion phenomenon of the tin alloy, thereby improving the durability of the strength and hardness of the tin alloy.
Preferably, the high-strength tin alloy raw material also comprises 0.03-0.05 part of magnesium, 0.01-0.03 part of nickel and 0.005-0.02 part of phosphorus.
By adopting the technical scheme, magnesium, nickel and phosphorus have better antioxidation effect, and simultaneously have better compatibility with other components in a tin alloy system. The phosphorus can have stronger affinity with oxygen, can abstract oxygen atoms in tin oxide, can protect the surface of tin atoms, plays a role in protecting a tin matrix, further reduces the oxidation phenomenon of a tin alloy product, and improves the durability of the strength and hardness of the tin alloy. The nickel element has better chemical stability, can not be easily oxidized, is dispersed in a tin alloy system, can improve the corrosion resistance and chemical resistance of the tin alloy, and can reduce the consumption of tin and improve the strength and the hardness durability of the tin alloy in the process of protecting the tin.
In a second aspect, the present application provides a method for preparing a high-strength tin alloy, which adopts the following technical scheme:
the preparation method of the high-strength tin alloy comprises the following specific steps:
mixing tin, copper, zinc, titanium, rare earth elements, antimony and lithium to form an alloy mixture, hot-pressing, sintering and forming the alloy mixture under the protection of inert gas to obtain a tin alloy, carrying out solution treatment on the tin alloy, carrying out water quenching, and then carrying out aging treatment to obtain the high-strength tin alloy.
By adopting the technical scheme, the metal elements of the tin alloy system are ground, so that better compatibility of the elements of the tin alloy system is promoted, and the subsequent operation is facilitated. The metal elements are sintered by hot pressing, so that the prepared alloy product has good compactness, the growth of crystal grains is limited, and the deformation of the alloy is reduced. The water quenching is used for quenching the tin alloy, so that the phenomena of deformation and crack of the alloy can be avoided, and the prepared tin alloy has higher hardness and strength.
Preferably, the melting temperature is 1200-1500 ℃.
Preferably, the solution treatment temperature is 450-500 ℃.
By adopting the technical scheme, the solution treatment is controlled to promote the uniform distribution of dissolved phases in the alloy in a reasonable range, promote the uniform combination of each metal element and the tin matrix, eliminate grain boundaries and precipitated phases, and further improve the hardness, strength and toughness of the tin alloy.
Preferably, the aging treatment is carried out at 200-300 ℃ for 5-10h.
By adopting the technical scheme, the toughness and the strength of the tin alloy can be increased by performing proper aging treatment after the water quenching of the tin alloy, and the deformation resistance and the impact resistance of the tin alloy are improved.
Preferably, magnesium, nickel, phosphorus and tin are mixed in advance, then mixed with copper, zinc, titanium, rare earth elements, antimony and lithium to form an alloy mixture, the alloy mixture is heated and melted under the protection of inert gas, and then cast and molded to obtain a tin alloy, and then the tin alloy is subjected to solution treatment, water quenching and aging treatment to obtain the high-strength tin alloy.
In summary, the present application has the following beneficial effects:
1. because the application adopts the combination of metal elements, the strength and the hardness of the tin alloy are improved, and the addition of a proper amount of rare earth elements can reduce the lattice size of a tin alloy system, increase the compactness of the tin alloy and reduce the deformation phenomenon of the tin alloy.
2. In the application, after grinding each metal element, hot-pressing sintering is performed in advance, so that the compactness of the alloy can be improved, and the deformation of the alloy can be reduced. Meanwhile, the water quenching is used for quenching the tin alloy, so that the phenomenon of cracking and deformation of the alloy can be avoided, and the hardness and strength of the tin alloy are improved.
Detailed Description
The present application is described in further detail below with reference to examples.
Examples
Example 1
The embodiment provides a high-strength tin alloy, which comprises the following raw materials in parts by weight: 40g of tin, 20g of copper, 2g of zinc, 0.4g of titanium, 0.7g of rare earth element, 4g of antimony and 4g of lithium. Wherein the rare earth element is lanthanum.
The preparation method of the high-strength tin alloy comprises the following specific steps:
mixing and grinding tin, copper, zinc, titanium, rare earth elements, antimony and lithium, sieving with a 200-mesh sieve to form an alloy mixture, hot-pressing and sintering the alloy mixture at 1400 ℃ and 25MPa under the protection of inert gas to obtain a tin alloy, then carrying out solution treatment on the tin alloy at 470 ℃ for 6 hours, and carrying out aging treatment at 200 ℃ for 10 hours after water quenching to obtain the high-strength tin alloy.
Example 2
Example 2 differs from example 1 in that the amount of tin used in the high-strength tin alloy raw material was 30g, the amount of copper used was 25g, the amount of zinc used was 1g, the amount of titanium used was 0.5g, the amount of rare earth element used was 0.5g, the amount of antimony used was 5g, and the amount of lithium used was 5g.
Example 3
Example 3 differs from example 1 in that the amount of tin used in the high-strength tin alloy raw material was 50g, the amount of copper used was 15g, the amount of zinc used was 3g, the amount of titanium used was 0.3g, the amount of rare earth element used was 0.8g, the amount of antimony used was 3g, and the amount of lithium used was 3g.
Example 4
Example 4 differs from example 1 in that the rare earth element in the high strength tin alloy raw material is cerium.
Example 5
Example 5 differs from example 1 in that the rare earth element in the high strength tin alloy raw material is yttrium.
Example 6
Example 6 differs from example 1 in that the rare earth element in the high strength tin alloy raw material is a mixture of cerium, lanthanum and yttrium in a mass ratio of 1:1:1.
Example 7
Example 7 differs from example 6 in that 0.04g of magnesium is also included in the high strength tin alloy raw material.
The preparation method of the high-strength tin alloy comprises the following specific steps:
mixing and grinding magnesium and tin in advance, adding copper, zinc, titanium, rare earth elements, antimony and lithium, mixing and grinding, sieving with a 200-mesh sieve to form an alloy mixture, hot-pressing and sintering the alloy mixture at 1400 ℃ and 25MPa under the protection of inert gas to form a tin alloy, carrying out solution treatment on the tin alloy at 470 ℃ for 6 hours, and carrying out aging treatment at 200 ℃ for 10 hours after water quenching to obtain the high-strength tin alloy.
Example 8
Example 8 differs from example 7 in that 0.02g of nickel was also included in the high strength tin alloy feedstock.
The preparation method of the high-strength tin alloy comprises the following specific steps:
mixing and grinding magnesium, nickel and tin in advance, adding copper, zinc, titanium, rare earth elements, antimony and lithium, mixing and grinding, sieving with a 200-mesh sieve to form an alloy mixture,
under the protection of inert gas, the alloy mixture is hot pressed and sintered at 1400 ℃ and 25MPa to form tin alloy, then the tin alloy is subjected to solution treatment at 470 ℃ for 6 hours, and after water quenching, the tin alloy is subjected to aging treatment at 200 ℃ for 10 hours, so that the high-strength tin alloy is obtained.
Example 9
Example 9 differs from example 8 in that 0.01g of phosphorus was also included in the high strength tin alloy raw material.
The preparation method of the high-strength tin alloy comprises the following specific steps:
mixing and grinding magnesium, nickel, phosphorus and tin in advance, adding copper, zinc, titanium, rare earth elements, antimony and lithium, mixing and grinding, sieving with a 200-mesh sieve to form an alloy mixture, hot-pressing and sintering the alloy mixture at 1400 ℃ and 25MPa under the protection of inert gas to obtain a tin alloy, carrying out solution treatment on the tin alloy at 470 ℃ for 6 hours, and carrying out aging treatment at 200 ℃ for 10 hours after water quenching to obtain the high-strength tin alloy.
Example 10
Example 10 differs from example 9 in that the amount of magnesium used in the high-strength tin alloy raw material was 0.03g, the amount of nickel used was 0.01g, and the amount of phosphorus used was 0.005g.
Example 11
Example 11 differs from example 9 in that the amount of magnesium used in the high-strength tin alloy raw material was 0.05g, the amount of nickel used was 0.03g, and the amount of phosphorus used was 0.02g.
Example 12
Example 12 differs from example 1 in that the high strength tin alloy is prepared without solution treatment.
The preparation method of the high-strength tin alloy comprises the following specific steps:
mixing and grinding tin, copper, zinc, titanium, rare earth elements, antimony and lithium, sieving with a 200-mesh sieve to form an alloy mixture, hot-pressing, sintering and forming the alloy mixture at 1400 ℃ and 25MPa under the protection of inert gas to obtain a tin alloy, and carrying out aging treatment at 200 ℃ for 10 hours after water quenching to obtain the high-strength tin alloy.
Comparative example
Comparative example 1
Comparative example 1 differs from example 1 in that rare earth elements are not used in the high-strength tin alloy raw material.
Performance test
According to the high strength tin alloys provided in examples 1 to 12 and comparative example 1 of the present application, the following performance tests were performed, and the specific test results are shown in table 1.
Detection method
1. Hardness of
The brinell hardness of the high strength tin alloy prepared herein was measured using a brinell hardness tester.
2. Tensile Strength and yield Strength
The high-strength tin alloy prepared by the method is prepared into standard tensile samples with a distance of 12.5mm, the samples are mounted on a tensile testing machine, and the yield strength and the tensile strength of the alloy are detected.
3. Oxidation resistance
The high-strength tin alloy prepared by the method is heated and melted, the tin solution is put into a stirrer and stirred at a constant speed, the mechanical stirring speed is lr/s, the test time is 60min, and the stirrer is taken out
Scraping tin liquid oxide film, weighing, and judging whether the oxidation performance is good or not according to the weight.
Table 1: performance test data sheet
According to the performance detection result, the tin alloy prepared by the method has higher strength and hardness, and a proper amount of rare earth elements are added into a tin alloy system, so that a high-melting-point compound can be generated in the tin alloy system, alloy grains are refined, the compactness of the tin alloy is improved, and the strength and hardness of the tin alloy are improved. In examples 1-5 of the present application, the tin alloy system was used in different amounts of each component, with the overall performance of example 1 being better.
As is clear from a comparison of example 6 and example 1, the rare earth element of example 6 uses a mixture of cerium, lanthanum and yttrium, and from the results of performance test, the tensile strength and hardness of the tin alloy are further improved. Further illustrates that the composite addition of various rare earth elements into the tin alloy system can refine the metal matrix grains better, and enhance the compactness in the tin alloy system through the adsorption.
In examples 7 to 11, the tin alloy system was added with an appropriate amount of magnesium, nickel and phosphorus, and the performance test results of the tin alloy prepared in examples 7 to 9 revealed that the tin alloy prepared in example 9 was superior in oxidation resistance by using the magnesium, nickel and phosphorus composite. This is probably because magnesium reduces the formation of oxide films, phosphorus has a better affinity for tin substrates, has better solubility in tin alloy systems, and nickel reduces the consumption of tin alloys, thereby contributing to better oxidation resistance in tin alloy systems. As is evident from the results of the performance tests of examples 9 to 11, the amounts of magnesium, nickel and phosphorus used in the tin alloy system in example 9 are more suitable.
As is clear from a comparison between example 12 and example 1, the tensile strength, yield strength and hardness of the tin alloy prepared in example 12 were all decreased as is evident from the performance test results of the tin alloy prepared in example 12 without using the solution treatment. This is probably because the tin alloy is subjected to solution treatment in the preparation process, so that the tin matrix and other metal elements can be uniformly combined together, the compactness of the tin alloy is enhanced, and the strength and hardness of the tin alloy are further improved.
As is clear from a comparison between comparative example 1 and example 1, the rare earth element was not used in example 1, and from the results of performance test, the overall performance of the tin alloy prepared in comparative example 1 was significantly lowered, further illustrating the promoting effect of the rare earth element on the strength and hardness of the tin alloy.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (8)
1. The high-strength tin alloy is characterized by comprising the following raw materials in parts by weight: 30-50 parts of tin, 15-25 parts of copper, 1-3 parts of zinc, 0.3-0.5 part of titanium, 0.5-0.8 part of rare earth element, 3-5 parts of antimony and 3-5 parts of lithium.
2. The high strength tin alloy according to claim 1, wherein the rare earth element is a mixture of lanthanum, cerium, and yttrium.
3. The high strength tin alloy according to claim 1, wherein the high strength tin alloy raw material further comprises 0.03-0.05 parts of magnesium, 0.01-0.03 parts of nickel, and 0.005-0.02 parts of phosphorus.
4. A method for producing a high strength tin alloy according to any one of claims 1 to 3, comprising the specific steps of:
grinding and mixing tin, copper, zinc, titanium, rare earth elements, antimony and lithium to form an alloy mixture, hot-pressing, sintering and forming the alloy mixture under the protection of inert gas to obtain a tin alloy, carrying out solid solution treatment on the tin alloy, carrying out water quenching and then carrying out aging treatment to obtain the high-strength tin alloy.
5. The method for producing a high-strength tin alloy according to claim 4, wherein the hot press sintering temperature is 1200 to 1500 ℃.
6. The method for producing a high-strength tin alloy according to claim 4, wherein the solution treatment temperature is 450 to 500 ℃.
7. The method for producing a high-strength tin alloy according to claim 4, wherein the aging treatment is performed at 200 to 300 ℃ for 5 to 10 hours.
8. The method for producing a high-strength tin alloy according to claim 4, wherein magnesium, nickel, phosphorus and tin are mixed in advance, then mixed with copper, zinc, titanium, rare earth elements, antimony and lithium to form an alloy mixture, the alloy mixture is heated and melted under the protection of inert gas, and then cast to form the tin alloy, and then the tin alloy is subjected to solution treatment, water quenching and aging treatment to obtain the high-strength tin alloy.
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