尊龙凯时

Silicon Carbide, comes in two forms - Black Silicon Carbide and Green Silicon Carbide. Each variety has its unique characteristics and plays an important role in various industrial applications. They are both produced by electro-fusion of silica sand, carbon, petroleum coke etc. in electric resistance furnace, while Green SiC with addition of industrial salt during production, which makes it green color after chemical reaction.

Differences
Green SiC with Less Impurity
Black/Dark Grey VS Green/Light Green
Green SiC very high hardness, Black SiC Moderate Hardness
Green SiC has better Shock Resistance & Thermal Conductivity
Green SiC has better Chemical Stability and Corrosion Resistance

Black Silicon Carbide is renowned for its relatively high hardness. With a Mohs hardness rating that makes it capable of handling tough materials. It contains a certain amount of carbon impurities within its structure, which contributes to its black appearance. This form of Silicon Carbide is widely used in the grinding process of materials like cast iron. The rough texture and hardness of Black Silicon Carbide enable it to effectively remove excess material from the surface of cast iron components during manufacturing processes. It is also suitable for working with non - ferrous metals such as copper and aluminum. In the field of sandblasting, Black Silicon Carbide particles are utilized to clean and prepare surfaces by roughening them up, enhancing the adhesion of coatings or for decorative purposes. It is also one of the most important fused minerals for refractory and metallurgical applications.

Green Silicon Carbide stands out with its even higher purity and hardness. The trace elements like chromium or titanium present in it give it a greenish hue. With a Mohs hardness that surpasses that of black silicon carbide, it is the go - to choice for grinding extremely hard workpieces. In the optical industry, Green Silicon Carbide is essential for precisely grinding the edges of lenses. The high - precision requirements of optical components demand an abrasive that can achieve a smooth and accurate finish without causing any damage. Green Silicon Carbide also shines in the semiconductor manufacturing process, where it is used to grind semiconductor wafers to exacting specifications. Moreover, for the sharpening of high - quality cutting tools that need to maintain their edge and precision during use, Green Silicon Carbide is the preferred abrasive material.

In conclusion, both black and green silicon carbide are vital in modern industry. Their distinct properties make them indispensable in different manufacturing and processing scenarios, driving the development of various fields from traditional metal processing to high - tech semiconductor and optical industries.