Emery, SiC, also known as silicon carbide. Pure is a colorless crystal. Density 3.06~3.20. It's very hard, about 9.5 degrees Morse. Generally, it is a colorless powdery particle. After grinding, it can be used as grinding powder, polishing paper, and friction surfaces for grinding wheels and whetstones. It is made by heating sand and carbon in an electric furnace.

Industrial alumina is prepared from bauxite (AlzOs-3H2O) and diaspore, and A1203, which requires high purity, is generally prepared by chemical methods. A1203 has a lot of homogenous crystals, there are more than 10 known, there are mainly 3 crystal types, namely A-Alzos, B-AlzOs, Y-AlzOs. Among them, different structures and properties are different, and it is almost completely converted into a-AlzO3 at high temperatures above 1300℃.

Silicon carbide (SiC), a compound of silicon and carbon, is a fascinating material that has earned its place as a leading abrasive in various industries. Manufactured through a high-temperature smelting process involving quartz sand, petroleum coke, and wood chips, silicon carbide is renowned for its uniform particle size, high refractoriness, and sharp edges.

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Silicon carbide (SiC) powder is a pillar of the advanced material world, widely recognized for its numerous applications in a wide range of sectors.

When it comes to abrasive materials, two contenders stand out in the ring.

Fused quartz is the amorphous (glassy) state of silicon oxide (quartz, silica), which is a typical glass with a long-range disordered atomic structure. It provides its high service temperature and low coefficient of thermal expansion through a three-dimensional structure cross-linking.

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