Abrasives and Cutting Tools: SiC’s hardness and sturdiness make it a superb abrasive material, widely used in grinding wheels, sandpapers, and slicing tools. 纯的碳化硅是无色的，工业用碳化硅由于含有铁等杂质而呈现棕色至黑色。晶体上彩虹般的光泽则是因为其表面产生的二氧化硅钝化层所致。 Purification and Grading: The crushed SiC undergoes a purification process to get rid of any impurities.... https://ltd50370.designertoblog.com/61394985/silicon-carbide-price-an-overview