Preparation method of refractory carbide particle reinforced copper infiltrated tungsten composite

A technology of carbide particles and composite materials, used in metal processing equipment, transportation and packaging, etc., can solve the problems of difficult to prepare transition metal carboborides, transition metal carbides and low solid solubility of borides, and achieve spherical shape. The effect of improving the mechanical properties and reducing the particle size

Active Publication Date: 2020-02-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that transition metal carbides and borides have low solid solubility and it is difficult to prepare transition metal carbides, the present invention provides a superhard single-phase carboride quaternary solid solution ceramics Material preparation method

Method used

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  • Preparation method of refractory carbide particle reinforced copper infiltrated tungsten composite
  • Preparation method of refractory carbide particle reinforced copper infiltrated tungsten composite

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0025] (1) With 200mL deionized water as the dispersion medium, first add 1mL of polyvinyl alcohol resin dispersant and 1mL of polyvinyl alcohol binder, until the dispersant and binder are completely dissolved in the dispersion medium, then add 100g of powder, of which The powder is composed of zirconium carbide and tungsten powder, the mass ratio of zirconium carbide and tungsten powder in the powder is 5:95, the purity of zirconium carbide and tungsten powder is >99%, and the particle size of zirconium carbide and tungsten powder is 1μm~2μm , after ultrasonic treatment for 30 min, a slurry was obtained.

[0026] (2) Use a sand mill to grind the slurry prepared in step 1 at a speed of 2000rpm for 10 hours, so that the slurry is more uniform and stable and the particle size of carbide and tungsten powder is refined; then the spray drying granulator will mix the slurry The material is sprayed and granulated to obtain zirconium carbide / tungsten composite powder particles with a ...

specific Embodiment approach 2

[0032] (1) With 200mL deionized water as the dispersion medium, first add 1mL of polyvinyl alcohol resin dispersant and 1mL of polyvinyl alcohol binder, until the dispersant and binder are completely dissolved in the dispersion medium, then add 100g of powder, of which The powder is composed of zirconium carbide and tungsten powder, the mass ratio of zirconium carbide and tungsten powder in the powder is 10:90, the purity of zirconium carbide and tungsten powder is >99%, and the particle size of zirconium carbide and tungsten powder is 1μm~2μm , after ultrasonic treatment for 30 min, a slurry was obtained.

[0033] (2) Use a sand mill to grind the slurry prepared in step 1 at a speed of 2000rpm for 10 hours to make the slurry more uniform and stable and to refine the particle size of carbide and tungsten powder. Use a laser particle size analyzer to measure the slurry after mixing The particle size D90 of the medium powder particles is 132nm; then use a spray drying granulator...

specific Embodiment approach 3

[0039] (1) With 200mL deionized water as the dispersion medium, first add 1mL of polyvinyl alcohol resin dispersant and 1mL of polyvinyl alcohol binder, until the dispersant and binder are completely dissolved in the dispersion medium, then add 100g of powder, of which The powder is composed of zirconium carbide and tungsten powder, the mass ratio of zirconium carbide and tungsten powder in the powder is 15:85, the purity of zirconium carbide and tungsten powder is >99%, and the particle size of zirconium carbide and tungsten powder is 1μm~2μm , after ultrasonic treatment for 30 min, a slurry was obtained.

[0040] (2) Use a sand mill to grind the slurry prepared in step 1 at a speed of 2000rpm for 10 hours to make the slurry more uniform and stable and to refine the particle size of carbide and tungsten powder. Use a laser particle size analyzer to measure the slurry after mixing The particle size D90 of medium powder particles is 107nm; then use a spray drying granulator to ...

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Abstract

The invention relates to a preparation method of a refractory carbide particle reinforced copper infiltrated tungsten composite, and belongs to the technical field of copper infiltrated tungsten composites. The problem that transition metal carbon borides are difficult to prepare due to low solid solution between existing transition metal carbides and borides is solved. According to the preparation method of the refractory carbide particle reinforced copper infiltrated tungsten composite, tungsten powder and transition metal carbide powder are configured into slurry, and composite powder is obtained after grinding, spray drying and radiofrequency plasma spheroidization are carried out. A porous blank body is obtained by the composite powder through modes of mold pressing and isostatic coolpressing, a porous preformed body is obtained after degumming and high temperature sintering, and the refractory carbide particle reinforced copper infiltrated tungsten composite is prepared by infiltrating metal copper at 1100 DEG C-1400 DEG C. The density and thermal conductivity of the composite is further reduced without reducing the ablation resistance of a copper infiltrated tungsten material, and meanwhile, the mechanical properties are greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a refractory carbide particle reinforced tungsten-copper-infiltrated composite material, and belongs to the technical field of tungsten-copper-infiltrated composite materials. Background technique [0002] Tungsten infiltrated copper material is a composite material prepared by infiltrating metal copper with high melting point and high strength tungsten skeleton. The main component is tungsten, and its content is more than 80%. The infiltrated copper will melt and volatilize at high temperature, playing the role of sweating and cooling. Tungsten infiltrated copper material has the advantages of high strength, high hardness, high temperature resistance, ablation resistance, low expansion coefficient, etc., and is widely used in high temperature fields such as aerospace (such as rocket nozzles, aircraft throat linings, etc.), machinery and electronics. [0003] Tungsten infiltrated copper is the most impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10B22F3/11B22F3/26C22C1/08
CPCC22C1/1036B22F3/11B22F3/26B22F2998/10B22F1/14B22F3/04B22F3/10B22F1/103
Inventor 王玉金陈磊霍思嘉周玉
Owner HARBIN INST OF TECH
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