High Level Material Silicon Metal 411

In order to reduce the difficulty of the follow-up process of silicon metal 411 pickling, the silicon metal was purified on the basis of the mature room temperature pickling technology and the new wet oxygen oxidation technology. The main function of pickling is to remove most of the metal impurities exposed on the surface of silicon metal particles; After the oxidation of wet oxygen, the boron with a small coagulation coefficient (coagulation coefficient in silicon and silica systems) in the particles diffuses into the silica at high temperature, and then corrodes to remove the oxide layer and the impurities in it. This method has obvious purification effect on boron impurities, and the content of boron impurities is as low as 4×10-6.

1.In order to improve the room temperature brittleness of the ternary silicon metal 411 compound Fe9Cr9Si2, an iron-based solid solution α toughened Fc9Cr9Si2 ternary metal silicide alloy (abbreviated as α/Fe9CrgSi2 alloy) was prepared by laser melting deposition, and its structure was composed of Fe9Cr9Si2 primary dendrites and interdendrite iron-based solid solution α, and the hardness of the alloy increased with the increase of the integral number of Fe9Cr9Si2 primary dendrites. Compared with single-phase Fe9Cr9Si2 alloy, the toughness of Fe9Cr9Si2 alloy is significantly improved by toughening iron-based solid solution. Under dry sliding friction conditions, the α/Fe9Cr9Si2 alloy has a low coefficient of friction, which decreases with the increase of the volume fraction of Fe9CrgSi2.

Hot Tags: high level material silicon metal 411, China high level material silicon metal 411 manufacturers, suppliers, factory, High Purity Silicon Metal Powder 98 5, Tech Grade Silicon Powder 400 mesh, Industrial Silicon, Silicon Powder Ultrafine 98 5, ferrosilicon powder 150 mesh, Silicon Powder Ultrafine 98 8