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Cermet powder

A technology of powder and ceramics, applied in metal material coating process, pressure inorganic powder coating, transportation and packaging, etc., to achieve the effect of improving adhesion efficiency

Active Publication Date: 2015-01-28
FUJIMI INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cermet particles are often difficult to deposit with high adhesion efficiency compared to metal particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7 and comparative example 1～4

[0049] Examples 1-7 and Comparative Examples 1-4 (HVOF spraying)

[0050] The powders of Examples 1 to 7 and Comparative Examples 1 to 4 made of granulated and sintered cermet particles were prepared, and each powder was sprayed under the conditions shown in Table 1. Details of each powder are shown in Table 2. In addition, although not shown in Table 2, the laser diffraction / scattering type particle size measuring machine "LA-300" manufactured by Horiba Seisakusho Co., Ltd. was used to measure the particle size of the granulated-sintered cermet particles of each powder. The average particle diameter was all 17 μm.

[0051] The column "Composition of Cermet Particles" in Table 2 shows the chemical composition of the granulated and sintered cermet particles of each powder. In the same column, "WC / 12%Co" means a cermet composed of 12% by mass of cobalt and the remainder of tungsten carbide, and "WC / 12%FeCrNi" means that it is composed of 12% by mass of iron-chromium-nickel all...

Embodiment 8～11 and comparative example 5～7

[0063] Examples 8-11 and comparative examples 5-7 (cold spraying)

[0064] The powders of Examples 8 to 11 and Comparative Examples 5 to 7 containing granulated and sintered cermet particles were prepared, and each powder was thermally sprayed under the conditions shown in Table 3. Details of each powder are shown in Table 4. In addition, although not shown in Table 4, the laser diffraction / scattering type particle size measuring machine "LA-300" manufactured by Horiba Seisakusho Co., Ltd. was used to measure the particle size of the granulated-sintered cermet particles of each powder. The average particle diameter was measured, and the results were all 17 μm.

[0065] The column "Composition of Cermet Particles" in Table 4 shows the chemical composition of the granulated and sintered cermet particles of each powder. In the same column, "WC / 25%FeCrNi" means a cermet composed of 25% by mass of iron-chromium-nickel alloy and the rest of tungsten carbide; WC / 25%FeSiCr" means a ...

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Abstract

A powder comprising ceramic-metal composite particles, characterized in that at least some of the composite particles do not exhibit any fracture point in a stress-strain diagram obtained by applying a compressive load to the particles up to a maximum value of 10mN or more at a loading rate of 15.0mN / s or less.

Description

technical field [0001] The present invention relates to a cermet powder comprising composite particles of ceramic and metal. Background technique [0002] Cermet particles, which are composite particles of ceramics and metal, are used in various applications as a material for forming a thermal spray coating, that is, powder for thermal spraying, as described in Patent Document 1, for example. One of the performances required of the powder for thermal spraying is that when thermal spraying is performed on a base material, a large amount of powder is deposited on the base material to form a film, that is, high adhesion efficiency. However, cermet particles are generally difficult to deposit with high adhesion efficiency compared to metal particles. This tendency is particularly prominent in low-temperature spraying processes such as cold spraying because the degree of melting and softening of the metal is reduced. [0003] Existing patent documents [0004] patent documents...

Claims

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Application Information

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IPC IPC(8): C23C4/04B22F1/00C22C29/08C23C4/12B22F1/06
CPCC23C4/06C22C29/08B22F1/00C23C4/12B22F1/06C23C24/04Y10T428/2982
Inventor 佐藤和人服部洋明山田纯也
Owner FUJIMI INCORPORATED
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