CN1143901C - Self-creeping technology for synthesizing great blocks of non-crystal alloy and non-crystal based composite at high temp - Google Patents
Self-creeping technology for synthesizing great blocks of non-crystal alloy and non-crystal based composite at high temp Download PDFInfo
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- CN1143901C CN1143901C CNB01106093XA CN01106093A CN1143901C CN 1143901 C CN1143901 C CN 1143901C CN B01106093X A CNB01106093X A CN B01106093XA CN 01106093 A CN01106093 A CN 01106093A CN 1143901 C CN1143901 C CN 1143901C
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- metallic glass
- glass composite
- amorphous alloys
- bulk amorphous
- propagating high
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Abstract
The present invention relates to a self-creeping technology for synthesizing a large block of a non-crystal alloy and a non-crystal based composite material at a high temperature, which belongs to the technical field of material preparation. The present invention basically comprises the following steps: (1). designing the components of a powder mixture; (2). mixing, pressing and moulding powders, and igniting the powders by an outer heat source; (3). utilizing the self-maintaining heat-releasing reaction of the combustion of rapid automatic waves and adjusting the release, transmission and cooling speed of heat so as to obtain the required components of the large block of a non-crystal alloy or the non-crystal based composite material. Compared with other preparation methods for large blocks of non-crystal alloys and non-crystal based composite materials, the present invention has characteristics of energy saving, convenience, rapidity, simple equipment, etc.
Description
Technical field the invention belongs to technical field of material.
The background technology amorphous metallic alloy not only has high intensity, toughness, wear resistance and solidity to corrosion as a kind of type material, but also shows good soft magnetism, superconducting characteristic, and characteristics such as low magnetic loss are greatly paid close attention to and be subjected to people.Yet the preparation amorphous alloy needs high speed of cooling usually, and its critical cooling velocity generally need be greater than 10
5K/s.Therefore utilize traditional methods such as melt-spun, thin-film technique can only prepare strip, filament and pulverous non-crystaline amorphous metal, this has limited the application of non-crystaline amorphous metal to a great extent.For this reason, people begin to be devoted to the research work of the block non-crystalline alloy material of high amorphous formation ability, and found the amorphous alloy component that a series of critical cooling velocitys are very low, as alloy systems such as Zr base, Ti base, Pd bases, the critical cooling rate of wherein typical Zr base amorphous is only at 1K/s.But it forms and moulding still needs the high temperature melting of complex process and rapid solidification subsequently, casts, inhales methods such as casting, die casting as copper film, and needs to consider the negative impact of interface forming core.
Summary of the invention purpose of the present invention just provide a kind of energy-conservation, prepare the synthetic bulk amorphous alloys of self propagating high temperature and the metallic glass composite technology of bulk amorphous alloys and metallic glass composite easily and efficiently.
Principle of the present invention is, bulk amorphous alloys is that multicomponent is formed, and the atomic size of constituent element has bigger difference, generally more than 12%, has very big negative enthalpy of mixing between major components.We notice that many bulk amorphous alloys owners want also can take place between constituent element intensive from keeping thermopositive reaction in the recent period, as the Zr-Al in the Zr-Al-Ni-Cu system, Zr-Ni, Zr-Cu, Al-Ni etc. are the known intermetallic objects system that self-propagating reaction can take place.Therefore, keep exothermal reaction process certainly, can generate the high liquid product of viscosity by controlling between initial composition and constituent element.Different according to composition and process of cooling, final solidified structure can be divided into two classes, and the one, by accurate control composition and process of cooling, the forming core of crystal phase and growth will be suppressed by dynamic conditions, cause forming whole non-crystaline amorphous metal; The 2nd, strict inadequately in Composition Control, the cooling rate deficiency, or have a mind to add under the wild phase constituent element condition synthetic metallic glass composite.The ratio of amorphous phase is subjected to multifactor impacts such as power, powder particle size, pressed density and size, cooling conditions, protective atmosphere and pressure, as the amorphous volume fraction respectively when igniting the increase of laser power and the raising of speed of cooling increase.
Technical solution of the present invention is; to have very strong amorphous formation ability; intensive can take place between constituent element from the large block amorphous constituent element powder mixes of keeping thermopositive reaction; compression moulding; place in the protective atmosphere; protective atmosphere is rare gas element or vacuum state; start outer thermal source; pressing embryo one end points fire to ignite; cooling immediately after combustion reactions finishes, speed of cooling generates bulk amorphous alloys greater than the amorphous critical cooling velocity; speed of cooling is not more than the amorphous critical cooling velocity; generate metallic glass composite, in large block amorphous constituent element powder, add the wild phase constituent element, generate metallic glass composite.
Synthetic bulk amorphous alloys of self propagating high temperature and metallic glass composite technology; atom is consisted of the mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23%; compression moulding; place in the protective atmosphere; start outer thermal source; pressing embryo one end points fire to ignite, laser power density is 5-150w/mm
3,, promptly obtain bulk amorphous alloys and metallic glass composite by keeping thermopositive reaction and non-equilibrium cooling certainly.
Protective atmosphere is a rare gas element.
Protective atmosphere is a vacuum state.
Speed of cooling generates bulk amorphous alloys greater than the amorphous critical cooling velocity.
Speed of cooling is lower than the amorphous critical cooling velocity, generates metallic glass composite.
Add the carbon dust of 2-10% weight percent in blending ingredients, the reaction back generates metallic glass composite.
Atom is consisted of the mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23%, being pressed into relative density is 45-90%, diameter is 5mm, thick in behind the 6mm pressure embryo, place argon gas, start outer thermal source, pressing embryo one end points fire to ignite, with greater than the cooling of 10k/s speed, generate bulk amorphous alloys after the combustion reactions.
The mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23% will be consisted of, being pressed into relative density is 45-90%, diameter is 5mm, thick in behind the 6mm pressure embryo, place argon gas, start outer thermal source, pressing embryo one end points fire to ignite, to be lower than the cooling of 10k/s speed, generate metallic glass composite after the combustion reactions.
Outer thermal source is a laser.
Laser power density is 5-150w/mm
3
Laser power density is 102w/mm
3
The present invention is further illustrated below in conjunction with embodiment for embodiment,
Embodiment 1:Zr
65Al
7.5Ni
10Cu
17.5The synthetic bulk amorphous alloys of self-propagating reaction
Zr
65Al
7.5Ni
10Cu
17.5The repressed one-tenth relative density of powder mixes system is 70%, and diameter is 5mm, and is thick in behind the 6mm pressure embryo, under argon shield; start laser ignition, laser power is 1.8Kw, and spot diameter is 5mm; through after keeping thermopositive reaction,, obtain bulk amorphous alloys with the cooling of 16k/s cooling rate.
Embodiment 2:Zr
65Al
7.5Ni
10Cu
17.5The synthetic metallic glass composite of self-propagating reaction
Zr
65Al
7.5Ni
10Cu
17.5The repressed one-tenth relative density of powder mixes system is 70%; diameter is 5mm; thick in behind the 6mm pressure embryo; under argon shield, start laser ignition, laser power is 1.8Kw; spot diameter is 5mm; through after keeping thermopositive reaction,, obtain the matrix material of forming by non-crystaline amorphous metal and zirconium Al intermetallic with the cooling of 8k/s cooling rate.
Embodiment 3: the Zr of doping C
65Al
7.5Ni
10Cu
17.5The self-propagating reaction of alloy
In Zr-Al-Ni-Cu matrix constituent element, add weight ratio 2-10% carbon dust; repressed one-tenth relative density is 70%; diameter is 5mm, and is thick in behind the 6mm pressure embryo, under argon shield; start laser ignition; laser power is 2.2Kw, and spot diameter is 5mm, through after keeping thermopositive reaction; with the cooling of 16k/s speed, generate the ZrC particle and strengthen metallic glass composite.
Claims (11)
1, synthetic bulk amorphous alloys of self propagating high temperature and metallic glass composite technology; it is characterized in that; atom is consisted of the mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23%; compression moulding; place in the protective atmosphere; start outer thermal source, pressing embryo one end points fire to ignite, laser power density is 5-150w/mm
3,, promptly obtain bulk amorphous alloys and metallic glass composite by keeping thermopositive reaction and non-equilibrium cooling certainly.
2, synthetic bulk amorphous alloys of self propagating high temperature according to claim 1 and metallic glass composite technology is characterized in that protective atmosphere is a rare gas element.
3, synthetic bulk amorphous alloys of self propagating high temperature according to claim 1 and metallic glass composite technology is characterized in that protective atmosphere is a vacuum state.
4, synthetic bulk amorphous alloys of self propagating high temperature according to claim 1 and metallic glass composite technology is characterized in that, speed of cooling generates bulk amorphous alloys greater than the amorphous critical cooling velocity.
5, synthetic bulk amorphous alloys of self propagating high temperature according to claim 1 and metallic glass composite technology is characterized in that speed of cooling is lower than the amorphous critical cooling velocity, generate metallic glass composite.
6, synthetic bulk amorphous alloys of self propagating high temperature according to claim 1 and metallic glass composite technology is characterized in that, add the carbon dust of 2-10% weight percent in blending ingredients, and the reaction back generates metallic glass composite.
7, according to claim 1,2,3, the synthetic bulk amorphous alloys of 4 described self propagating high temperatures and metallic glass composite technology, it is characterized in that, atom is consisted of the mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23%, and being pressed into relative density is 45-90%, and diameter is 5mm, thick in behind the 6mm pressure embryo, place argon gas, start outer thermal source, pressing embryo one end points fire to ignite, with greater than the cooling of 10k/s speed, generate bulk amorphous alloys after the combustion reactions.
8, according to claim 1,2,3, the synthetic bulk amorphous alloys of 5 described self propagating high temperatures and metallic glass composite technology, it is characterized in that, to consist of the mixed powder of Zr:55-60%, Al:7.5-20%, Ni:5-12%, Cu:8-23%, being pressed into relative density is 45-90%, and diameter is 5mm, thick in behind the 6mm pressure embryo, place argon gas, start outer thermal source, pressing embryo one end points fire to ignite, to be lower than the cooling of 10k/s speed, generate metallic glass composite after the combustion reactions.
9, according to claim 7, the synthetic bulk amorphous alloys of 8 described self propagating high temperatures and metallic glass composite technology, it is characterized in that outer thermal source is a laser.
10, synthetic bulk amorphous alloys of self propagating high temperature according to claim 9 and metallic glass composite technology is characterized in that laser power density is 5-150w/mm
3
11, synthetic bulk amorphous alloys of self propagating high temperature according to claim 10 and metallic glass composite technology is characterized in that laser power density is 102w/mm
3
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| Application Number | Priority Date | Filing Date | Title |
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| CNB01106093XA CN1143901C (en) | 2001-01-17 | 2001-01-17 | Self-creeping technology for synthesizing great blocks of non-crystal alloy and non-crystal based composite at high temp |
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| CNB01106093XA CN1143901C (en) | 2001-01-17 | 2001-01-17 | Self-creeping technology for synthesizing great blocks of non-crystal alloy and non-crystal based composite at high temp |
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| CN1366087A CN1366087A (en) | 2002-08-28 |
| CN1143901C true CN1143901C (en) | 2004-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686662A (en) * | 2018-05-28 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | Nano TiO 2-amorphous zirconium-base alloy composite photocatalyst material and preparation method thereof and purposes |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041461B (en) * | 2009-10-22 | 2012-03-07 | 比亚迪股份有限公司 | Zr-based amorphous alloy and preparation method thereof |
| CN101906564B (en) * | 2010-08-31 | 2012-07-04 | 辽宁工程技术大学 | Method for synthesizing in situ authigene ceramic phase strengthened Al-Cu matrix composite through laser combustion |
| CN101906572B (en) * | 2010-08-31 | 2012-02-08 | 辽宁工程技术大学 | Method for synthesizing in-situ formed ceramic particle reinforced iron-aluminum-based composites by laser combustion |
| CN102234747B (en) * | 2011-06-23 | 2012-07-25 | 湖南理工学院 | Cu-based blocky amorphous alloy composite material |
| CN102517524B (en) * | 2012-01-10 | 2013-08-21 | 湖南理工学院 | Cu50Zr40Ti10 block amorphous alloy composite and preparation process thereof |
| CN106975747B (en) * | 2017-04-10 | 2019-05-03 | 大连交通大学 | The high-throughput screening method of amorphous alloy component |
| CN115537685A (en) * | 2022-10-10 | 2022-12-30 | 江苏恩夏科技发展有限公司 | Amorphous military armor protective material |
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2001
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108686662A (en) * | 2018-05-28 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | Nano TiO 2-amorphous zirconium-base alloy composite photocatalyst material and preparation method thereof and purposes |
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