Preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating

A technology of composite coating and silicon carbide, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., can solve the problems of poor coating performance, low deposition efficiency, unsuitable application, etc., and achieve low cost and high production efficiency. The process is simple and the effect of close combination of phases

Active Publication Date: 2022-04-15
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention overcomes the defects of high raw material cost, high process cost, low deposition efficiency, poor coating performance and unsuitable application in large-scale industrial production of the direct spraying method in the prior art

Method used

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  • Preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating
  • Preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating
  • Preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating

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Experimental program
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Effect test

Embodiment 1

[0051] The preparation method of the zirconium boride-zirconium carbide-silicon carbide composite coating in this embodiment adopts the method of in-situ synthesis of the zirconium boride-zirconium carbide-silicon carbide composite coating, and the steps are as follows:

[0052] The first step is to prepare zirconium / boron carbide / silicon carbide composite powder for thermal spraying:

[0053] Uniformly mix zirconium powder with a particle size range of 0.001 micron to 10 microns, boron carbide powder with a particle size range of 0.001 micron to 10 microns, and silicon carbide powder with a particle size range of 0.001 micron to 10 microns to form a composite powder. Among them, silicon carbide powder accounts for 5% by weight of the total mass of the three raw material powders of zirconium powder, boron carbide powder and silicon carbide powder, and zirconium powder plus boron carbide powder accounts for the three types of zirconium powder, boron carbide powder and silicon ca...

Embodiment 2

[0059] The preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating adopts the method of in-situ synthesis of zirconium boride-zirconium carbide-silicon carbide composite coating, and the steps are as follows:

[0060] The first step is to prepare zirconium / boron carbide / silicon carbide composite powder for thermal spraying:

[0061] Uniformly mix zirconium powder with a particle size range of 0.001 micron to 10 microns, boron carbide powder with a particle size range of 0.001 micron to 10 microns, and silicon carbide powder with a particle size range of 0.001 micron to 10 microns to form a composite powder. Among them, silicon carbide powder accounts for 10% by weight of the total mass of the three raw material powders of zirconium powder, boron carbide powder and silicon carbide powder, and zirconium powder plus boron carbide powder accounts for the three types of zirconium powder, boron carbide powder and silicon carbide powder. The percent...

Embodiment 3

[0068] The preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating adopts the method of in-situ synthesis of zirconium boride-zirconium carbide-silicon carbide composite coating, and the steps are as follows:

[0069] The first step is to prepare zirconium / boron carbide / silicon carbide composite powder for thermal spraying:

[0070] Uniformly mix zirconium powder with a particle size range of 0.001 micron to 10 microns, boron carbide powder with a particle size range of 0.001 micron to 10 microns, and silicon carbide powder with a particle size range of 0.001 micron to 10 microns to form a composite powder. Among them, silicon carbide powder accounts for 30% by weight of the total mass of the three raw material powders of zirconium powder, boron carbide powder and silicon carbide powder, and zirconium powder plus boron carbide powder accounts for 30% of the total mass of zirconium powder, boron carbide powder and silicon carbide powder. The w...

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Abstract

The invention relates to a method for preparing a zirconium boride-zirconium carbide-silicon carbide composite coating. The method comprises the following steps: the first step, preparing zirconium / boron carbide / silicon carbide composite powder or zirconia / boron carbide / aluminum / silicon carbide composite powder; the second step, pretreating the surface of the base material to be coated The third step is to spray the composite powder prepared in the above first step on the surface of the base material by thermal spraying, so as to obtain a zirconium boride-zirconium carbide-silicon carbide composite coating through in-situ reaction synthesis. The invention overcomes the defects of high raw material cost, high process cost, low deposition efficiency, poor coating performance and unsuitability for large-scale industrial production of the direct spraying method. At the same time, the disadvantages of poor high-temperature oxidation resistance and ablation resistance of the zirconium boride-zirconium carbide composite coating prepared in the prior art are also overcome.

Description

technical field [0001] The technical scheme of the present invention relates to the coating of materials with borides, carbides and silicon carbides, in particular to the preparation method of zirconium boride-zirconium carbide-silicon carbide composite coating. Background technique [0002] With the development of modern technologies such as aerospace, aviation, atomic energy and new smelting technologies, more and more stringent requirements are put forward for high-temperature high-performance structural materials, requiring materials to have good high-temperature resistance to adapt to harsh operating environments, such as heat-resistant Impact, high temperature strength, corrosion and oxidation resistance. Zirconium boride (ZrB 2 ) has the characteristics of high melting point (3245°C), high hardness (22GPa), good electrical and thermal conductivity, good flame retardancy, heat resistance, good chemical stability, corrosion resistance and good neutron control ability, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/131C23C4/02C23C4/06C23C4/073C23C4/10
CPCC23C4/131C23C4/02C23C4/073C23C4/06C23C4/10
Inventor 杨勇崔宇航马玉夺孙文韦
Owner HEBEI UNIV OF TECH
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