CN103667772B - Copper-based powder dispersion ceramic as well as preparation method and application thereof - Google Patents
Copper-based powder dispersion ceramic as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to copper-based powder dispersion ceramic as well as a preparation method and application thereof, and relates to the field of ceramic materials. The copper-based powder dispersion ceramic is prepared from an anti-abrasion constituent element as one of the raw materials, wherein the anti-abrasion constituent element comprises the following components by mass percent of all the raw materials: 1-5 percent of diamond powder and 1-5 percent of titanium diboride powder. The copper-based powder dispersion ceramic is high in impact pressure resistance, high in mechanical intensity, high in friction and abrasion resistance, long in service life, high in heat dissipation property and heat recovery property, high in high-temperature and low-temperature resistance, high in acid, alkaline, oil, water and the like corrosion resistance and the like.
Description
Technical field
The present invention relates to a kind of Cu-base powder disperse pottery and its preparation method and application, relate to stupalith field.
Background technology
Along with social progress speed and rhythm of life are accelerated, the breadth and depth of Economic development is increasing, the requirement of people to trip mode convenience is more and more higher, high-speed rail transportation adapts to and has agreed with the demand of social this respect, and increasing to the expected value of the raising of its speed, safety control reliability, require also more and more harsher.And one of key problem of the most critical wherein related to is exactly the braking problem of high speed railway car.
Existing high speed railway car and traditional railway train braking system principle similar, but structure have employed more reasonably distributed brake actuator unit (comprising the retarding disc on wheel shaft and brake brake lining).When bullet train enters the station or meet accident snub, brake execution unit key part retarding disc and brake brake lining perform brake instruction, and braking state quality depends on above-mentioned parts, and especially brake brake lining.And brake piece performance depends on use material and manufacturing process.
Although high speed railway car brake pad friction materials is towards carbon carbon (C/C), carbon pottery (C/SiC, Al
2o
3, or the stupalith such as other alloy type), the brake pad future development of the material such as aluminium base, but its correlation technique is not also very ripe, high cost.Cu-base powder brake pad be at present one of the best material of cost and benefit balance.
Cu-base powder disperse ceramic particle brake pad friction materials adopts powder metallurgy technology manufacture, because advantage that powder metallurgy is exclusive is that the degree of freedom of Material selec-tion is high, on the structure adjusting of Cu-base powder disperse ceramic particle brake pad Properties of Friction Materials, selecting and purchasing different metal or non-metal simple-substance powder targetedly, the pre-alloyed powder of copper and other metals, metal or non-metal nitride powder, metal or non-metallic carbide powder, the material such as metal or metalloid oxide powder carries out selection and adds, to reaching desirable material compatible combination, the mutual wettability between compatibility composition and thermal expansivity relativity will be considered simultaneously, the stability of composition in applied at elevated temperature condition, and forming materials difficulty, whether loose etc. to the bandwidth requirement condition of sintering.Certainly, the material of micron order or nano-scale dimension is selected can to have the lifting of matter in performance.In addition, another benefit of powder metallurgy technology is, sintering temperature lower than the such component segregation of generation pure metal less during constituent element contents temperature and various defect, so correlative study is all to launch around this technique.
The constituent element of Cu-base powder disperse ceramic particle brake pad friction materials functionally defines and mainly comprises following three: matrix constituent element, wear-resisting constituent element, lubricant component.In order to improve, rare earth that sintering condition and Cu-base powder brake pad Properties of Friction Materials add etc. is wetting in addition, crystal grain thinning constituent element etc.
Because high speed railway car speed goes is fast, the operating mode of brake brake lining is more and more severe, requires to be mainly reflected in following performance to its integrated quality:
(1) withstand shock, the frequent folding of clamp to brake lining continue impact, pass in time, internal stress can increase gradually, causes fragility to increase, arrisdefect, fall block possibility increase, so require that its withstand shock performance will be got well;
(2) friction resistant abradability is good, and the life-span is long;
(3) thermal diffusivity and heat restorative good;
(4) lower temperature resistance, high temperatures (transient temperature reaches more than 1000 DEG C) is good;
(5) corrodibility such as acid-and base-resisting, oil, water are strong;
(6) tolerate high lubricating condition (oil, fog, gray haze, sand and dust, rainwater, snow, immersion) property good, these factors can cause frictional coefficient to reduce;
(7) absorbing is good;
(8) rigidity is suitable for;
(9) hardness is suitable for, too large large to mating plate (brake flange) wearing and tearing, too little meeting sluggish brake assemblage brake reaction effect;
(10) thermal expansivity is low;
(11) specific tenacity is suitable for;
(12) kinetic energy absorption and convertibility strong;
(13) stable friction factor;
(14) ageing-resistant;
(15) little to the wearing and tearing of mating plate (brake flange); Brake flange is without locus coeruleus, and friction texture is even, without polishing mirrored effect;
(16) noise is low;
(17) environmental friendliness (without chemical pollution and radioactive radiation);
The performance requriements of all parameters of brake brake lining is more and more higher, and these parameters are the relations affecting each other and link.Simultaneously, the snub that burst accident is taked, higher to the performance requriements of brake lining friction materials, and the envrionment conditions of braking is independent of man's will, frequent braking under so common operating mode (normal weather) condition, generally be difficult to the key property determining brake lining friction materials, in the time scale in brake lining friction materials lifetime, also have no way of investigating its snub usefulness.The snub only taked when burst accident, just more can test the performance parameters of brake lining friction materials.So optional can better material, develop high performance Cu-base powder disperse ceramic particle brake pad friction materials and formulate advanced manufacturing process and will have larger meaning, also will carry out overall equilbrium in the control of Material selec-tion and cost simultaneously.
At present, there are some mechanisms, company disclosed some correlation techniques, although some parts solve block, arrisdefect and problem of partially rubbing, but in work-ing life of brake brake lining most critical in this performance or not ideal, although unit manufacturing cost may be cheap, because work-ing life is short, change frequent, last comprehensive cost does not reduce, and compromises again the efficiency of turning out for work of bullet train simultaneously, cannot realize high-speed rail transportation vehicle at a high speed, the requirement of efficient, high safety performance.
Summary of the invention
The object of this invention is to provide a kind of powder disperse pottery.
A Cu-base powder disperse pottery, the raw material for the preparation of described pottery comprises wear-resisting constituent element, described wear-resisting constituent element, by the mass percent accounting for whole raw material, comprises following component:
Bortz powder 1% ~ 5%
TiB2 powder 1% ~ 5%.
For the preparation of the feed particles of Cu-base powder disperse pottery of the present invention by matrix constituent element, wear-resisting constituent element, lubricant component forms, and wherein copper powder is main base constituent element.For ensureing the wear resisting property of gained disperse pottery, the present invention adopts bortz powder, TiB2 powder and optional other components added as wear-resisting constituent element.Above-mentioned bortz powder, TiB2 powder all have higher hardness and intensity, can improve the wear resisting property of gained pottery.
In raw material for the preparation of Cu-base powder disperse pottery of the present invention, described wear-resisting constituent element, by the mass percent accounting for whole raw material, is made up of following component:
Bortz powder 1% ~ 5%
TiB2 powder 1% ~ 5%
Auxiliary wear-resisting constituent element 2% ~ 12%
Wherein, described auxiliary wear-resisting constituent element is selected from least one in oxidate powder, carbide powder and nitride powder; Described oxidate powder is selected from least one in aluminum oxide powder and silicon dioxide powder; Described carbide powder is selected from least one in carborundum powder and boron carbide powder; Described nitride powder is selected from least one in boron nitride powder and silicon nitride powder.
In raw material for the preparation of Cu-base powder disperse pottery of the present invention, the total amount of preferred described wear-resisting constituent element is no more than 22% of whole raw materials quality, and further preferred described wear-resisting constituent element accounts for 4% ~ 22% of whole raw materials quality.
In raw material for the preparation of Cu-base powder disperse pottery of the present invention, described lubricant component, by the mass percent accounting for whole raw material, is made up of following component:
Graphite Powder 99 5% ~ 8%
Curing tungsten powder 1% ~ 7%
In raw material for the preparation of Cu-base powder disperse pottery of the present invention, the total amount of preferred described lubricant component is no more than 15% of whole raw materials quality, and further preferred described lubricant component accounts for 6% ~ 15% of whole raw materials quality.
Raw material for the preparation of described pottery of the present invention comprises matrix constituent element, described matrix constituent element, by the mass percent accounting for whole raw material, is made up of following component:
Copper powder 50% ~ 75%
Metal powder 7% ~ 32%
Wherein, described metal powder is aluminium powder, chromium powder, molybdenum powder, at least one in nickel powder and glass putty.
In raw material for the preparation of Cu-base powder disperse pottery of the present invention, the total amount of preferred described matrix constituent element is no more than 82% of whole raw materials quality, and further preferred described matrix constituent element accounts for 57% ~ 82% of whole raw materials quality.
Metal powder of the present invention, by the mass percent accounting for whole raw material, is made up of following component: aluminium powder 2% ~ 8%, chromium powder 1% ~ 4%, molybdenum powder 1% ~ 4% nickel powder 1% ~ 6%, glass putty 2% ~ 10%.
In all technical schemes of the present invention, all feed composition mass percents of feed particles for the preparation of Cu-base powder disperse pottery of the present invention add and are 100%.
Raw material for the preparation of Cu-base powder disperse pottery of the present invention is powder, and preferably it is nanometer powder, and preferably the median size of powder is less than 200nm further.
Another object of the present invention is to provide the preparation method of above-mentioned Cu-base powder disperse pottery.
A preparation method for Cu-base powder disperse pottery, comprises following processing step.
1. raw material mixing: all raw materials are mixed;
2. base: raw material powder step be 1. mixed to get loads mould, compacting base;
3. sinter: by normal pressure-sintered for base substrate loading inert atmosphere after step 2. the gained demoulding or inflated with nitrogen pressure sintering; The temperature of described inflated with nitrogen pressure sintering is 850 ~ 980 DEG C, pressure range is 3 ~ 4MPa, sintering time 3 ~ 10 hours.
In aforesaid method, 1. step preferably carries out as follows: all raw materials are placed in biconical mixer and mix 40 minutes ~ 1 hour.
Above-mentioned raw materials mixing step 1. also can take to add dehydrated alcohol (adding 30 ~ 60ml ratio in the mixed powder of 1kg) together mixing method carry out, carry out drying treatment after mixing.The method can reduce mixing time, become branch evenly, not Workflow's powder, the free from environmental pollution and health of useful operator.
Preferably pre-treatment is carried out to it when using nanometer, micron powder, specific as follows: micro-, nano level raw material powder to be immersed in and to fill in the container of dehydrated alcohol, insert again in the ultrasonic disperse machine be filled with water and disperse, pour biconical mixer into together with dehydrated alcohol dispersion liquid after being uniformly dispersed and carry out wet mixing conjunction, after mixing, drying treatment is for subsequent use again.
In aforesaid method, 2. step preferably carries out as follows: raw material powder step be 1. mixed to get loads mould, and on a hydraulic press with 10 ~ 25MPa compacting, pressurize 1 ~ 3min is shaping, and the blank after the demoulding etc. are to be sintered.
3. above-mentioned steps can adopt the molding sintering of the not demoulding, specifically carries out in the following manner: 800 ~ 880 DEG C, pressure is 3 ~ 4MPa, sintering time 0.5 ~ 2 hour.
Another object of the present invention provides described Cu-base powder disperse pottery as the application of brake-pad friction block, especially as the application of brake block for high-speed train frictionshoe.
Beneficial effect of the present invention is: Cu-base powder disperse pottery withstand shock pressure of the present invention is strong, and physical strength is high, and friction resistant abradability is good, and abrasion loss is 0.227cm
3/ MJ, meets and is less than 0.35cm
3the requirement of/MJ standard performance, life-span is long, thermal diffusivity and heat restorative good, resistance to height (transient temperature reaches more than 1000 DEG C), low temperature properties is good, acidproof, alkali, oil, the corrodibility such as water are strong, tolerate high lubricating condition (oil, fog, gray haze, sand and dust, rainwater, snow, immersion) property is good, absorbing is good, rigidity is suitable for, hardness is suitable for, thermal expansivity is low, specific tenacity is suitable for, kinetic energy absorption and convertibility strong, stable friction factor, ageing-resistant, little to the wearing and tearing of mating plate (brake flange), noise is low, environmental friendliness (pollution-free), respond well at the bullet train of more than 200km/h to braking speed per hour.
Accompanying drawing explanation
Fig. 1 material compatibility embodiment 1 friction coefficient curve chart;
Fig. 2 material compatibility embodiment 2 friction coefficient curve chart;
Fig. 3 material compatibility embodiment 3 friction coefficient curve chart;
Fig. 4 brake facing vertical view;
Fig. 5 is the enlarged view of the side-view of brake facing shown in Fig. 4;
Reference numeral is as follows: 1, brake shoe base plate; 2, frictionshoe; 3, frictionshoe through hole.
Note: in friction coefficient curve chart, X-coordinate is brake speed (unit: km/h); Ordinate zou is instantaneous coefficient of friction (μ); Instantaneous coefficient of friction μ=retarding disc load (Ft)/brake-pad friction block bears pressure (F
b), i.e. μ=Ft/F
b; Retarding disc load and brake-pad friction block bear pressure thousand newton (KN) and represent.
Cu-base powder disperse ceramic friction block of the present invention is tested with reference to UIC541-3 standard on 1:1 is jack horse test bed.
Jack horse test bed retarding disc quality: 6.7t; Retarding disc size:
640x110mm; Vehicle wheel footpath: 890mm; Brake facing type: UIC-12, is shown in Figure 4 and 5.
Testing sequence is:
1, several times break-in braking is carried out to brake facing, make the brake-pad friction block total area and brake disc face at least reach 80%;
2, brake facing is cooled to 50 ~ 60 DEG C, carries out stopping brake test;
3, given brake speed, different brake speed determines the rotating speed of retarding disc, under different rotating speeds, the contact pressure F of measuring and calculating Ft retarding disc load and brake-pad friction block
b;
4, corresponding Ft and F is recorded
bdata, PVvalue testing data are as following table:
Be respectively in its brace: retarding disc charge number and brake-pad friction block bear pressure (unit: thousand newton KN)
The data of PVvalue testing shown in Fig. 1 ~ 3 see the following form 1: be respectively in its brace: retarding disc load and brake-pad friction block bear pressure (unit: thousand newton KN)
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| 50km/h | (6.08，16) | (6.72，16) | (6.22，16) |
| Frictional coefficient | 0.38 | 0.42 | 0.389 |
| 100km/h | (6.22，16) | (6.64，16) | (6.24，16) |
| Frictional coefficient | 0.389 | 0.415 | 0.39 |
| 150km/h | (5.92，16) | (6.40，16) | (6.56，16) |
| Frictional coefficient | 0.37 | 0.40 | 0.41 |
| 200km/h | (5.82，16) | (6.24，16) | (6.72，16) |
| Frictional coefficient | 0.364 | 0.39 | 0.42 |
| 250km/h | (9.24，24) | (9.36，24) | (10.27，24) |
| Frictional coefficient | 0.385 | 0.39 | 0.428 |
| 300km/h | (9.79，24) | (9.84，24) | (10.49，24) |
| Frictional coefficient | 0.408 | 0.41 | 0.437 |
| 350km/h | (9.79，24) | (10.06，24) | (11.04，24) |
| Frictional coefficient | 0.408 | 0.419 | 0.46 |
| 400km/h | (10.10，24) | (10.15，24) | (10.87，24) |
| Frictional coefficient | 0.421 | 0.423 | 0.453 |
5, carry out 50 brakings to brake facing, then weigh, recording last average abrasion amount is 0.227cm
3/ MJ.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
The all feed composition mass percents of feed particles for the preparation of Cu-base powder disperse pottery of the present invention add and are 100%.
The preferred technical scheme of the present invention is: a kind of Cu-base powder disperse pottery, for the preparation of the raw material of described pottery, by the mass percent accounting for whole raw material, is made up of following component:
Wherein, described auxiliary wear-resisting constituent element is selected from least one in oxidate powder, carbide powder and nitride powder; Described oxidate powder is selected from least one in aluminum oxide powder and silicon dioxide powder; Described carbide powder is selected from least one in carborundum powder and boron carbide powder; Described nitride powder is selected from least one in boron nitride powder and silicon nitride powder; Wherein, described metal powder is aluminium powder, chromium powder, molybdenum powder, at least one in nickel powder and glass putty.
One of embodiment, for the preparation of the raw material of described Cu-base powder disperse pottery, by mass percentage, is made up of following component:
Copper powder 50 ~ 75, bortz powder 1 ~ 5, TiB2 powder 1 ~ 5, aluminum oxide powder 1 ~ 6, silica powder 1 ~ 6, aluminium powder 2 ~ 8, chromium powder 1 ~ 4, molybdenum powder 1 ~ 4, nickel powder 1 ~ 6, glass putty 2 ~ 10, Graphite Powder 99 5 ~ 8, curing tungsten powder 1 ~ 7;
Embodiment two, for the preparation of the raw material of described Cu-base powder disperse pottery, by mass percentage, is made up of following component:
Copper powder 50 ~ 75, bortz powder 1 ~ 5, TiB2 powder 1 ~ 5, carborundum powder 1 ~ 6, norbide 1 ~ 6, aluminium powder 2 ~ 8, chromium powder 1 ~ 4, molybdenum powder 1 ~ 4, nickel powder 1 ~ 6, glass putty 2 ~ 10, Graphite Powder 99 5 ~ 8, curing tungsten powder 1 ~ 7;
Embodiment three, for the preparation of the raw material of described Cu-base powder disperse pottery, by mass percentage, is made up of following component:
Copper powder 50 ~ 75, bortz powder 1 ~ 5, TiB2 powder 1 ~ 5, boron nitride powder 1 ~ 6, silicon nitride powder 1 ~ 6, aluminium powder 2 ~ 8, chromium powder 1 ~ 4, molybdenum powder 1 ~ 4, nickel powder 1 ~ 6, glass putty 2 ~ 10, Graphite Powder 99 5 ~ 8, curing tungsten powder 1 ~ 7;
Above-mentioned Cu-base powder disperse pottery is prepared as follows:
1. raw material mixing: all raw materials are mixed, specific as follows: pre-treatment: raw material powder to be immersed in and to fill in the container of dehydrated alcohol, insert again in the ultrasonic disperse machine be filled with water and disperse, pour biconical mixer into together with dehydrated alcohol dispersion liquid after being uniformly dispersed and carry out wet mixing conjunction, after mixing, drying treatment is for subsequent use again; By add in pre-treatment gained raw material dehydrated alcohol (adding 30 ~ 60ml ratio in the mixed powder of 1kg) together mixing method carry out, carry out drying treatment after mixing.
2. base: raw material powder step be 1. mixed to get loads mould, with 10 ~ 25MPa compacting on hydropress, pressurize 1 ~ 3min is shaping, the demoulding;
3. sinter: by step 2. gained base substrate load the normal pressure-sintered or inflated with nitrogen pressure sintering of inert atmosphere; The temperature of described inflated with nitrogen pressure sintering is 850 ~ 900 DEG C, pressure range is 3 ~ 4MPa, sintering time 3 ~ 10 hours.
Median size raw materials used in following embodiment is 200 orders with carefully.
Embodiment 1
Copper powder 61, bortz powder 3, TiB2 powder 2, aluminum oxide powder 4, silica powder 3, aluminium powder 3, chromium powder 2, molybdenum powder 2, nickel powder 4, glass putty 5, Graphite Powder 99 6, curing tungsten powder 5;
Preparation method is as follows:
1. raw material mixing: all raw materials are mixed;
2. base: raw material powder step be 1. mixed to get loads mould, with 15MPa compacting on hydropress, pressurize 3min is shaping, the demoulding;
3. sinter: by step 2. gained base substrate loading inert atmosphere, inflated with nitrogen pressure sintering; The temperature of described inflated with nitrogen pressure sintering is 880 DEG C, pressure is 3MPa, sintering time 5 hours.
Embodiment 2
Copper powder 63, bortz powder 2, TiB2 powder 2, carborundum powder 4, norbide 3, aluminium powder 3, chromium powder 2, molybdenum powder 2, nickel powder 3, glass putty 6, Graphite Powder 99 5, curing tungsten powder 5;
Preparation method, with embodiment 1, is not all:
3. sinter: by step 2. gained base substrate loading inert atmosphere, inflated with nitrogen pressure sintering; The temperature of described inflated with nitrogen pressure sintering is 880 DEG C, pressure is 3MPa, sintering time 5 hours.
Embodiment 3
Copper powder 68, bortz powder 2, TiB2 powder 2, boron nitride powder 3, silicon nitride powder 3, aluminium powder 2, chromium powder 1, molybdenum powder 1, nickel powder 2, glass putty 5, Graphite Powder 99 6, curing tungsten powder 5;
Preparation method, with embodiment 1, is not all:
3. sinter: by step 2. gained base substrate loading inert atmosphere, inflated with nitrogen pressure sintering; The temperature of described inflated with nitrogen pressure sintering is 880 DEG C, pressure is 3MPa, sintering time 5 hours.
Claims (6)
1. Cu-base powder disperse pottery, is characterized in that: for the preparation of the raw material of described pottery by wear-resisting constituent element, lubricant component, basic constituent element composition,
Described wear-resisting constituent element, by the mass percent accounting for whole raw material, is made up of following component:
Bortz powder 1% ~ 5%
TiB2 powder 1% ~ 5%
Auxiliary wear-resisting constituent element 2% ~ 12%
Wherein, described auxiliary wear-resisting constituent element is selected from least one in oxidate powder, carbide powder and nitride powder; Described oxidate powder is selected from least one in aluminum oxide powder and silicon dioxide powder; Described carbide powder is selected from least one in carborundum powder and boron carbide powder; Described nitride powder is selected from least one in boron nitride powder and silicon nitride powder;
Described lubricant component, by the mass percent accounting for whole raw material, is made up of following component:
Graphite Powder 99 5% ~ 8%
Curing tungsten powder 1% ~ 7%;
Described matrix constituent element, by the mass percent accounting for whole raw material, is made up of following component:
2. pottery according to claim 1, is characterized in that: for the preparation of the raw material of described pottery, by the mass percent accounting for whole raw material, is made up of following component:
Copper powder 50% ~ 75%, bortz powder 1% ~ 5%, TiB2 powder 1% ~ 5%, aluminum oxide powder 1% ~ 6%, silica powder 1% ~ 6%, aluminium powder 2% ~ 8%, chromium powder 1% ~ 4%, molybdenum powder 1% ~ 4%, nickel powder 1% ~ 6%, glass putty 2% ~ 10%, Graphite Powder 99 5% ~ 8%, curing tungsten powder 1% ~ 7%.
3. pottery according to claim 1, is characterized in that: for the preparation of the raw material of described pottery, by the mass percent accounting for whole raw material, is made up of following component:
Copper powder 50% ~ 75%, bortz powder 1% ~ 5%, TiB2 powder 1% ~ 5%, carborundum powder 1% ~ 6%, norbide 1% ~ 6%, aluminium powder 2% ~ 8%, chromium powder 1% ~ 4%, molybdenum powder 1% ~ 4%, nickel powder 1% ~ 6%, glass putty 2% ~ 10%, Graphite Powder 99 5% ~ 8%, curing tungsten powder 1% ~ 7%.
4. pottery according to claim 1, is characterized in that: for the preparation of the raw material of described pottery, by the mass percent accounting for whole raw material, is made up of following component:
Copper powder 50% ~ 75%, bortz powder 1% ~ 5%, TiB2 powder 1% ~ 5%, boron nitride powder 1% ~ 6%, silicon nitride powder 1% ~ 6%, aluminium powder 2% ~ 8%, chromium powder 1% ~ 4%, molybdenum powder 1% ~ 4%, nickel powder 1% ~ 6%, glass putty 2% ~ 10%, Graphite Powder 99 5% ~ 8%, curing tungsten powder 1% ~ 7%.
5. the preparation method of powder disperse pottery described in claim 1, is characterized in that: comprise following processing step:
1. raw material mixing: all raw materials are mixed;
2. base: raw material powder step be 1. mixed to get loads mould, compacting base;
3. sinter: by step 2. gained base substrate load the normal pressure-sintered or inflated with nitrogen pressure sintering of inert atmosphere; The temperature of described inflated with nitrogen pressure sintering is 850 ~ 980 DEG C, pressure range is 3 ~ 4MPa, sintering time 3 ~ 10 hours.
6. Cu-base powder disperse pottery described in claim 1 is as the application of brake-pad friction block.
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| CN1710124A (en) * | 2005-05-27 | 2005-12-21 | 哈尔滨工业大学 | Method for preparing reactive hot-press in-situ autogenesis copper-base composite material |
| CN101631885A (en) * | 2007-02-22 | 2010-01-20 | 钴碳化钨硬质合金公司 | Composite materials comprising a hard ceramic phase and a Cu-Ni-Sn infiltration alloy |
| CN101722257A (en) * | 2009-12-10 | 2010-06-09 | 中国航空工业集团公司北京航空材料研究院 | Pseudo-plastic forming method for processing metal-based composite materials |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710124A (en) * | 2005-05-27 | 2005-12-21 | 哈尔滨工业大学 | Method for preparing reactive hot-press in-situ autogenesis copper-base composite material |
| CN101631885A (en) * | 2007-02-22 | 2010-01-20 | 钴碳化钨硬质合金公司 | Composite materials comprising a hard ceramic phase and a Cu-Ni-Sn infiltration alloy |
| CN101722257A (en) * | 2009-12-10 | 2010-06-09 | 中国航空工业集团公司北京航空材料研究院 | Pseudo-plastic forming method for processing metal-based composite materials |
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