Hard, fine particles used to polish metals, stone, wood, glass, and other materials. Naturally occurring materials used as abrasives include diamond, emery, corundum, sand, garnet, quartz, pumice, diatomite, kaolin, fuller's earth, talc, chalk, and cuttlefish bone. Manufactured materials used as abrasives include silicon carbide, aluminum oxide, zirconium oxide, titanium dioxide, green rouge (chromic oxide), stannic oxide, cerium oxide, glass, boron carbide, boron nitride, and synthetic diamond. Abrasives are sold as powders, slurries, and as abrasive cloths, papers, and wheels. They are characterized by hardness and particle size. Their hardness can be measured on the Mohs' scale in which the diamond is rated as a 10. Mild abrasives, such as chalk and talc, have a hardness of 1-3 Mohs. Diamond and silicon carbide are hard abrasives. Particle size depends on the mesh of the sieves used for separation, i.e. a 600 grit abrasive contains particles 8 micrometers and smaller.
Synonyms and Related Terms
diamond; emery; corundum; sand; garnet; quartz; pumice; diatomite; kaolin; fuller's earth; talc; chalk; cuttlefish bone; silicon carbide; aluminum oxide; zirconium oxide; titanium dioxide; green rouge; chromic oxide; tin oxide; cerium oxide; glass; boron carbide; boron nitride; steel wool; abrasive paper; lubrisil, micromesh; abrasive powder; crocus powder; jewelers rouge; rottenstone; tripoli powder; whiting; Schleifmittel (Deut.); abrasif (Fr.);
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