CN105908103A - Method for preparing hollow Cu-based microsphere amorphous alloy through discharge sintering - Google Patents
Method for preparing hollow Cu-based microsphere amorphous alloy through discharge sintering Download PDFInfo
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- CN105908103A CN105908103A CN201610477106.XA CN201610477106A CN105908103A CN 105908103 A CN105908103 A CN 105908103A CN 201610477106 A CN201610477106 A CN 201610477106A CN 105908103 A CN105908103 A CN 105908103A
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- 238000005245 sintering Methods 0.000 title claims abstract description 43
- 239000004005 microsphere Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title abstract description 6
- 235000013162 Cocos nucifera Nutrition 0.000 claims abstract description 35
- 244000060011 Cocos nucifera Species 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000005300 metallic glass Substances 0.000 claims description 30
- 239000010903 husk Substances 0.000 claims description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 238000000498 ball milling Methods 0.000 claims description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 12
- 238000009656 pre-carbonization Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/001—Amorphous alloys with Cu as the major constituent
-
- 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
- B22F3/006—Amorphous articles
-
- 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
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- C22C1/11—Making amorphous alloys
-
- 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
-
- 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
- C22C45/00—Amorphous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a method for preparing hollow Cu-based microsphere amorphous alloy through discharge sintering and belongs to the technical field of alloy preparation. According to the invention, copper powder, titanium powder and zirconium powder are mixed and ball-milled, discarded coconut shells are carbonized to obtain coconut shell porous carbon particles, the mixed and ball-milled copper powder, titanium powder and zirconium powder are mixed, stirred and pressed with the coconut shell porous carbon particles, and finally, the discharge sintering method is utilized to sinter the mixed, stirred and pressed powder and the coconut shell porous carbon particles to obtain the hollow Cu-based microsphere amorphous alloy. The hollow Cu-based microsphere amorphous alloy is high in tenacity and unlikely to break and has a tensile strength of 1650-1700 MPa.
Description
Technical field
The present invention relates to the preparation method of a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal, belong to field of alloy preparation technology.
Background technology
Non-crystaline amorphous metal also known as metal glass, be by liquid metal within the extremely short time (10-7～10-2S) solid metal material solidified and prepare.The atom of composition non-crystaline amorphous metal does not has periodicity and the translational symmetry of crystalline state gold on space structure, the long-range order of atom is destroyed, in rapid solidification, due to interatomic interrelated effect, make metal less than pattern and the component in the range of several atomic distances of 1.5 nm with liquid metal.Amorphous alloy maintains the architectural characteristic of liquid metal longrange disorder, shortrange order in process of setting, and its structure and composition are more more uniform than crystalline metallic material, thus have the performance of uniqueness and excellence.Metal material as a kind of function admirable, non-crystaline amorphous metal is applied in a lot of field such as electronics industry, medical apparatus and instruments, magnetic material, in use show the performance more excellent than crystalline material, but also have broad application prospects in the field such as war industry, Aero-Space.
In recent years, welding method is also used to realize homogeneity, the connection of heterogeneous non-crystaline amorphous metal and non-crystaline amorphous metal and the connection of crystal alloy, thus it is greatly expanded size and the application of non-crystaline amorphous metal, greatest problem in non-crystaline amorphous metal welding process is crystallization problem, crystallization causes the decline of non-crystaline amorphous metal performance, in order to avoid crystallization, one is the alloying component chosen in molten solder as far as possible and have high glass forming ability, uses the welding method of high-energy-density；Two is to choose rational welding parameter in Solid-State Welding, non-crystaline amorphous metal is heated to supercooling liquid phase region, its superplasticity in supercooling liquid phase region is utilized to be attached, but, use solder technology to obtain large-size bulk amorphous alloy and there is also the problems such as such as weld interface area constraints, welding procedure are complicated.Though compared with crystal alloy; non-crystaline amorphous metal has intensity height, hardness advantages of higher; but owing to not being similar to the structures such as the crystal boundary of crystal alloy, phase boundary and dislocation; its inefficacy at ambient temperature is caused to show as brittle fracture; the unstable propagation that shear band would generally occur causes calamitous fracture, constrains non-crystaline amorphous metal to a great extent as the application of structural material and development.
Summary of the invention
The technical problem to be solved: there will be crystallization problem in welding process for non-crystaline amorphous metal, cause non-crystaline amorphous metal hydraulic performance decline, toughness is low, easy fracture, poor stability, largely limit its application and the problem of development, provide a kind of by porous carbon is prepared in coconut husk carbonization, by porous carbon, metal dust is adsorbed the most subsequently, make it form metal powder layer on porous carbon surface, subsequently after discharge sintering, remove kernel charcoal by logical oxygen, again under rich hydrogen condition, the method for reduction-oxidation non-crystaline amorphous metal.Non-crystaline amorphous metal toughness prepared by the present invention is high, not easy fracture, and correlated performance is advantageous, is widely portable to the fields such as magnetic material.
For solving above-mentioned technical problem, the present invention uses the technical scheme as described below to be:
(1) collecting discarded coconut husk, cleaned and dry, at 250～300 DEG C, pre-carbonization processes 2～3h, after pre-carbonization has processed, it is to slowly warm up to 650～700 DEG C by 10 DEG C/min, after insulation carbonization 1～2h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 3～5h, it is prepared into 80～100 mesh coconut husk porous carbon granules, standby；
(2) count by weight, weigh 40～50 parts of copper powders, 30～40 parts of titanium valves, 10～15 parts of zirconium powders and 5～10 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 60～80 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 2～3h, after ball milling completes, collects ball-milled powder and sieves, at 65～80 DEG C, it is dried 6～8h again, is prepared into 140～150 mesh mixed-powders；
(3) 1:8 in mass ratio, coconut husk porous carbon granule step (1) prepared is placed in homogenizer with the mixed-powder of above-mentioned preparation, stirring mixing 10～15min under 1800～3500r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 10～20s under 20～25MPa, is subsequently placed at 400～450 DEG C preheating 1～2h；
(4) after preheating completes, it is placed in discharge plasma sintering stove, control sparking electrode with mold interval from for 20～30cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 2～5h under 550～600V, to be sintered complete after, standing is cooled to room temperature, it is passed through hydrogen and gets rid of oxygen, in a hydrogen atmosphere, it is applied 200～300V and transfers electroreduction sintering 1～2h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
The discharge sintering hollow Cu base saturated magnetic strength of microsphere non-crystaline amorphous metal prepared by the present invention is 1.56～1.88T, and coercivity is less than 3A/m, and resistivity is 135～140 μ Ω cm, and tensile strength is 1650～1700MPa, and thickness is 25～30 μm.
The present invention is compared with additive method, and Advantageous Effects is:
(1) discharge sintering of the present invention hollow Cu base microsphere non-crystaline amorphous metal toughness is high, and not easy fracture, tensile strength is 1650～1700MPa；
(2) the discharge sintering hollow Cu base microsphere non-crystaline amorphous metal preparation process that prepared by the present invention is simple, required low cost.
Detailed description of the invention
First collecting discarded coconut husk, cleaned and dry, at 250～300 DEG C, pre-carbonization processes 2～3h, after pre-carbonization has processed, it is to slowly warm up to 650～700 DEG C by 10 DEG C/min, after insulation carbonization 1～2h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 3～5h, it is prepared into 80～100 mesh coconut husk porous carbon granules, standby；Count the most by weight, weigh 40～50 parts of copper powders, 30～40 parts of titanium valves, 10～15 parts of zirconium powders and 5～10 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 60～80 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 2～3h, after ball milling completes, collects ball-milled powder and sieves, at 65～80 DEG C, it is dried 6～8h again, is prepared into 140～150 mesh mixed-powders；1:8 the most in mass ratio, the mixed-powder of the coconut husk porous carbon granule of preparation Yu above-mentioned preparation is placed in homogenizer, stirring mixing 10～15min under 1800～3500r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 10～20s under 20～25MPa, is subsequently placed at 400～450 DEG C preheating 1～2h；Finally after preheating completes, it is placed in discharge plasma sintering stove, control sparking electrode with mold interval from for 20～30cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 2～5h under 550～600V, to be sintered complete after, standing is cooled to room temperature, it is passed through hydrogen and gets rid of oxygen, in a hydrogen atmosphere, it is applied 200～300V and transfers electroreduction sintering 1～2h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
Example 1
First collecting discarded coconut husk, cleaned and dry, at 300 DEG C, pre-carbonization processes 3h, after pre-carbonization has processed, it is to slowly warm up to 700 DEG C by 10 DEG C/min, after insulation carbonization 2h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 5h, it is prepared into 100 mesh coconut husk porous carbon granules, standby；Count the most by weight, weigh 50 parts of copper powders, 40 parts of titanium valves, 15 parts of zirconium powders and 10 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 80 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 3h, after ball milling completes, collects ball-milled powder and sieves, at 80 DEG C, it is dried 8h again, is prepared into 150 mesh mixed-powders；1:8 the most in mass ratio, the mixed-powder of the coconut husk porous carbon granule of preparation Yu above-mentioned preparation is placed in homogenizer, stirring mixing 15min under 3500r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 20s under 25MPa, is subsequently placed at 450 DEG C preheating 2h；Finally after preheating completes, it is placed in discharge plasma sintering stove, controls sparking electrode and mold interval from for 30cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 5h under 600V, to be sintered complete after, stand be cooled to room temperature, to its be passed through hydrogen get rid of oxygen, in a hydrogen atmosphere, it is applied 300V and transfers electroreduction sintering 2h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
After testing, the discharge sintering hollow Cu base saturated magnetic strength of microsphere non-crystaline amorphous metal prepared by the present invention is 1.88T, and coercivity is 2.6A/m, and resistivity is 140 μ Ω cm, and tensile strength is 1700MPa, and thickness is 30 μm.
Example 2
First collecting discarded coconut husk, cleaned and dry, at 250 DEG C, pre-carbonization processes 2h, after pre-carbonization has processed, it is to slowly warm up to 650 DEG C by 10 DEG C/min, after insulation carbonization 1h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 3h, it is prepared into 80 mesh coconut husk porous carbon granules, standby；Count the most by weight, weigh 40 parts of copper powders, 30 parts of titanium valves, 10 parts of zirconium powders and 5 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 60 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 2h, after ball milling completes, collects ball-milled powder and sieves, at 65 DEG C, it is dried 6h again, is prepared into 140 mesh mixed-powders；1:8 the most in mass ratio, the mixed-powder of the coconut husk porous carbon granule of preparation Yu above-mentioned preparation is placed in homogenizer, stirring mixing 10min under 1800r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 10s under 20MPa, is subsequently placed at 400 DEG C preheating 1h；Finally after preheating completes, it is placed in discharge plasma sintering stove, controls sparking electrode and mold interval from for 20cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 2h under 550V, to be sintered complete after, stand be cooled to room temperature, to its be passed through hydrogen get rid of oxygen, in a hydrogen atmosphere, it is applied 200V and transfers electroreduction sintering 1h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
The discharge sintering hollow Cu base saturated magnetic strength of microsphere non-crystaline amorphous metal prepared by the present invention is 1.56T, and coercivity is 2.4A/m, and resistivity is 135 μ Ω cm, and tensile strength is 1650MPa, and thickness is 25 μm.
Example 3
First collecting discarded coconut husk, cleaned and dry, at 270 DEG C, pre-carbonization processes 2h, after pre-carbonization has processed, it is to slowly warm up to 670 DEG C by 10 DEG C/min, after insulation carbonization 1h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 4h, it is prepared into 90 mesh coconut husk porous carbon granules, standby；Count the most by weight, weigh 45 parts of copper powders, 35 parts of titanium valves, 12 parts of zirconium powders and 7 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 70 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 2h, after ball milling completes, collects ball-milled powder and sieves, at 70 DEG C, it is dried 7h again, is prepared into 145 mesh mixed-powders；1:8 the most in mass ratio, the mixed-powder of the coconut husk porous carbon granule of preparation Yu above-mentioned preparation is placed in homogenizer, stirring mixing 12min under 1900r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 15s under 22MPa, is subsequently placed at 420 DEG C preheating 1h；Finally after preheating completes, it is placed in discharge plasma sintering stove, controls sparking electrode and mold interval from for 25cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 3h under 570V, to be sintered complete after, stand be cooled to room temperature, to its be passed through hydrogen get rid of oxygen, in a hydrogen atmosphere, it is applied 250V and transfers electroreduction sintering 1h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
The discharge sintering hollow Cu base saturated magnetic strength of microsphere non-crystaline amorphous metal prepared by the present invention is 1.77T, and coercivity is 2.7A/m, and resistivity is 137 μ Ω cm, and tensile strength is 1650～1700MPa, and thickness is 27 μm.
Claims (1)
1. the preparation method of a discharge sintering hollow Cu base microsphere non-crystaline amorphous metal, it is characterised in that concrete preparation process:
(1) collecting discarded coconut husk, cleaned and dry, at 250～300 DEG C, pre-carbonization processes 2～3h, after pre-carbonization has processed, it is to slowly warm up to 650～700 DEG C by 10 DEG C/min, after insulation carbonization 1～2h, stands and be cooled to room temperature, collect coconut shell chars, it is placed in ball mill, with water as disperse medium, sieves after ball milling 3～5h, it is prepared into 80～100 mesh coconut husk porous carbon granules, standby；
(2) count by weight, weigh 40～50 parts of copper powders, 30～40 parts of titanium valves, 10～15 parts of zirconium powders and 5～10 parts of nikel powders respectively to be placed in ball mill, control above-mentioned metal dust size and be 60～80 mesh, subsequently to evacuation in ball grinder and be passed through argon, after getting rid of air, again with toluene as dispersant, ball-milling treatment 2～3h, after ball milling completes, collects ball-milled powder and sieves, at 65～80 DEG C, it is dried 6～8h again, is prepared into 140～150 mesh mixed-powders；
(3) 1:8 in mass ratio, coconut husk porous carbon granule step (1) prepared is placed in homogenizer with the mixed-powder of above-mentioned preparation, stirring mixing 10～15min under 1800～3500r/min, collect coconut husk charcoal hybrid particles, it is placed in mould, two-way compacting 10～20s under 20～25MPa, is subsequently placed at 400～450 DEG C preheating 1～2h；
(4) after preheating completes, it is placed in discharge plasma sintering stove, control sparking electrode with mold interval from for 20～30cm, subsequently to oxygen air-out logical in discharge plasma sintering stove, discharge sintering 2～5h under 550～600V, to be sintered complete after, standing is cooled to room temperature, it is passed through hydrogen and gets rid of oxygen, in a hydrogen atmosphere, it is applied 200～300V and transfers electroreduction sintering 1～2h, stand after being cooled to room temperature, a kind of discharge sintering hollow Cu base microsphere non-crystaline amorphous metal can be prepared into.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610477106.XA CN105908103A (en) | 2016-06-27 | 2016-06-27 | Method for preparing hollow Cu-based microsphere amorphous alloy through discharge sintering |
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| CN201610477106.XA CN105908103A (en) | 2016-06-27 | 2016-06-27 | Method for preparing hollow Cu-based microsphere amorphous alloy through discharge sintering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813233A (en) * | 2019-11-04 | 2020-02-21 | 广东省微生物研究所（广东省微生物分析检测中心） | Method for adsorbing heavy metal ions in soil by coconut shell charcoal |
| CN111360272A (en) * | 2020-04-21 | 2020-07-03 | 华中科技大学 | Oxide interface toughening amorphous-based composite material and preparation method thereof |
-
2016
- 2016-06-27 CN CN201610477106.XA patent/CN105908103A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813233A (en) * | 2019-11-04 | 2020-02-21 | 广东省微生物研究所（广东省微生物分析检测中心） | Method for adsorbing heavy metal ions in soil by coconut shell charcoal |
| CN111360272A (en) * | 2020-04-21 | 2020-07-03 | 华中科技大学 | Oxide interface toughening amorphous-based composite material and preparation method thereof |
| CN111360272B (en) * | 2020-04-21 | 2021-10-15 | 华中科技大学 | A kind of oxide interface toughened amorphous matrix composite material and preparation method thereof |
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Application publication date: 20160831 |