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Black silicon carbide and green silicon carbide

Date: Dec 1st, 2022

According to color, use and structure, silicon carbide can be divided into different categories. Pure silicon carbide is a colorless transparent crystal. Industrial silicon carbide is colorless, light yellow, light green, dark green or light blue, dark blue and black. Abrasive industry according to the color of silicon carbide is divided into black silicon carbide and green silicon carbide two categories, which colorless until dark green are classified into green silicon carbide; Light blue to black are classified as black silicon carbide.
The reason of silicon carbide polychromatic is related to the existence of various impurities. Industrial silicon carbide usually contains about 2% of various impurities, mainly silicon dioxide, silicon, iron, aluminum, calcium, magnesium, carbon and so on. When more carbon is fused in the crystallization, the crystallization is black. Green silicon carbide is more brittle, black silicon carbide is tougher, the former grinding ability is slightly higher than the latter. According to granularity, the product is divided into different grades.