Method for preparing zirconium boride/silicon carbide composite powder with low cost

A zirconium diboride and silicon carbide technology, which is applied in the field of low-cost preparation of zirconium diboride/silicon carbide composite powder, can solve the problems of high cost and restrictions on the large-scale application of zirconium diboride/silicon carbide composite materials. Achieve the effects of simple production equipment, simple and easy method, and low cost of zircon

Inactive Publication Date: 2011-04-20
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-cost method for preparing zirconium diboride / silicon carbide composite powder, to overcome the high cost of the current preparation method, which restricts the large-scale application of zirconium diboride / silicon carbide composite materials

Method used

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  • Method for preparing zirconium boride/silicon carbide composite powder with low cost
  • Method for preparing zirconium boride/silicon carbide composite powder with low cost

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the formula (molar ratio, the same below) is ZrSiO 4 : B 4 C : C = 1 : 0.5 : 4.5 Weigh the ingredients, put the mixture into a ball mill tank, use zirconia balls as the balls, mill for 4 hours, and pass through a 400-mesh sieve. Then, the reaction synthesis was carried out under the protection of argon in a vacuum furnace, and the temperature was kept at 1500° C. for 1 hour. Take out the synthesized powder and put it into a ball mill jar, still using zirconia balls as the balls, and mill for 12 hours. After passing through a 400-mesh sieve, the zirconium diboride / silicon carbide composite powder can be obtained.

Embodiment 2

[0022] The selected formula is: ZrSiO 4 : B 4 C : C = 1 : 0.5 : 5.4, weigh the ingredients, put the mixture into a ball mill jar, use zirconia balls as the balls, mill for 6 hours, and pass through a 300-mesh sieve. Then, the reaction synthesis was carried out in a vacuum furnace under the protection of argon, the synthesis temperature was 1500° C., and the temperature was kept for 1 hour. The synthesized powder was taken out and put into a ball mill jar, and zirconia balls were used as the balls for ball milling for 12 hours. After passing through a 300-mesh sieve, the zirconium diboride / silicon carbide composite powder can be obtained.

Embodiment 3

[0024] According to the formula: ZrSiO 4 : B 4 C : C = 1: 0.5 : 5.85 Weigh the ingredients, put the mixture into a ball mill jar, use zirconia balls as the balls, mill for 6 hours, and pass through a 400-mesh sieve. Then, the reaction synthesis was carried out in a vacuum furnace under the protection of argon, the synthesis temperature was 1500° C., and the temperature was kept for 1 hour. The synthesized powder was taken out and put into a ball mill jar, and zirconia balls were used as the balls for ball milling for 12 hours. Pass through a 400-mesh sieve to obtain zirconium diboride / silicon carbide composite powder.

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Abstract

The invention belongs to the technical field of ceramic materials and particularly relates to a method for preparing zirconium boride / silicon carbide composite powder with low cost, which comprises the steps of: taking raw materials of ZrSiO4, B4C and C according to the proportion of 1:0.5-0.65:4.5-5.85; mixing and then ball-milling for 4-8h; making the ball-milled powder react for 0.5-1h at a temperature of 1,500-1,600 DEG C under the protection of inert gas; and then ball-milling again to obtain the zirconium boride / silicon carbide composite powder. The invention has low cost and simple production equipment, can be used for synthesizing the zirconium boride / silicon carbide composite powder on a large scale, is simple and easy to implement, and is suitable for industrialized application and popularization.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, in particular to a method for preparing zirconium diboride / silicon carbide composite powder at low cost. Background technique [0002] Zirconium diboride (ZrB 2 ) With its high melting point (3245°C), strength, hardness, good thermal conductivity, electrical conductivity, good corrosion resistance and other excellent properties, it has become an ideal candidate material for ultra-high temperature ceramics. It is used in high-temperature structural components, chemical anti-corrosion materials, Electrode materials and many other fields have very broad application prospects. But ZrB 2 The application and development of the alloy is also limited by the three main factors of difficult sintering, poor high temperature oxidation resistance and poor toughness. Studies have shown that by adding ZrB 2 Adding a silicon carbide (SiC) reinforcement phase to it can greatly improve its performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/58C04B35/626
Inventor 王海龙范冰冰张锐卢红霞冯伦陈德良
Owner ZHENGZHOU UNIV
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