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Sandpaper, also known as glasspaper or as coated abrasive, is a type of material that consists of sheets of paper or cloth with an abrasive substance glued to one face. [1] In the modern manufacture of these products, sand and glass have been replaced by other abrasives such as aluminium oxide or silicon carbide.
Gray silicon carbide abrasives are used on hard and brittle substances, such as grey iron and cemented carbide, and low tensile strength metals, such as brass, aluminium, and copper. [1] Green chromium(III) oxide is the abrasive used in green compounds that are typically used to finish ferrous metals (steels).
Silicon carbide (SiC), also known as carborundum (/ ˌ k ɑːr b ə ˈ r ʌ n d əm /), is a hard chemical compound containing silicon and carbon. A wide bandgap semiconductor , it occurs in nature as the extremely rare mineral moissanite , but has been mass-produced as a powder and crystal since 1893 for use as an abrasive .
A macro etched copper disc. After mounting, the specimen is wet ground to reveal the surface of the metal. The specimen is successively ground with finer and finer abrasive media. Silicon carbide abrasive paper was the first method of grinding and is still used today. Many metallographers, however, prefer to use a diamond grit suspension which ...
Silicon carbide powders are commonly used as abrasive materials in various machining processes, including grinding, water-jet cutting, and sandblasting. [6] These powders are effective for fine grinding or rough polishing of semiconductors, ceramics, and ferrous materials. [7]
the chemical composition of the abrasive particles (common abrasives include diamond, cubic boron nitride (CBN), chromium(III) oxide, tungsten carbide, silicon carbide and other ceramics). In synthetic stones, the grit size is related to the mesh size used to select the particles to be included in the abrasive. Sandpaper also uses a similar system.
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