碳化硅是于1881年发明的一种耐磨损性能高、以SiC为主要化学成分的人工研磨材料。在分子结构方面，碳化硅呈现共价键构成的原子晶格晶体结构，所以拥有极强的强度。 Silicon carbide has been used as abrasives since it was invented in 1881. Due to the molecular structure of silicon carbide whose bond in the structure is covalent bond, it turns out that the silicon carbide owns powerful hardness.
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