Why is silicon carbide available in so many colors? Let's take a look:

Silicon carbide has many colors, because the types of silicon carbide are different, so it can be applied in more fields, especially these silicon carbide flashes in the sun is also very beautiful, in fact, pure silicon carbide is a colorless crystal, the color of industrial silicon carbide depends on the type and number of impurities present in the crystal, there are many different colors between light yellow and black. The abrasive industry treats light blue to black as black silicon carbide; Colorless to green is green silicon carbide. There are many different explanations for the coloring of silicon carbide. It is generally believed to be caused by the presence of foreign impurities, such as when boron is introduced in the form of boron carbide, which makes the crystal black; It is green when the crystal contains nitrogen.

In addition to the color of the crystal itself, the appearance color of the silicon carbide is also related to the interference phenomenon of natural light in the film on the surface of the crystal. When the thickness of the silicon oxide film on the surface of the silicon carbide crystal is different, or the angle of reflection to the light is different, the color of the surface of the silicon carbide crystal is also different. Therefore, in natural light, it is often seen that silicon carbide has a brilliant and colorful color. Different colors of silicon carbide, the production process is also different, therefore, we also need to understand the characteristics of different types of silicon carbide in the use of the process.

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