alumina abrasive grain

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• abrasive — abrasively, adv. abrasiveness, n. /euh bray siv, ziv/, n. 1. any material or substance used for grinding, polishing, etc., as emery, pumice, or sandpaper. adj. 2. tending to abrade; causing abrasion; abrading. 3. tending to annoy or cause ill… …   Universalium

• Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …   Wikipedia

• Grains — make up the structure of metals. Metal surfaces contain a number of small crystals known as grains, with boundaries where they join. Abrasive grain material is prepared by coating non sintered aluminum base particles with a metal alkoxide… …   Wikipedia

• Ceramic materials — Ceramic Si3N4 bearing parts Ceramic materials are inorganic, non metallic materials and things made from them. They may be crystalline or partly crystalline. They are formed by the action of heat and subsequent cooling.[1] Clay was one of the… …   Wikipedia

• Ceramography — is the art and science of preparation, examination and evaluation of ceramic microstructures.[1] Ceramography can be thought of as the metallography of ceramics. The microstructure is the structure level of approximately 0.1 to 100 µm, between… …   Wikipedia

• crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …   Universalium

• Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …   Universalium

• Diatomaceous earth — A sample of diatomaceous earth Diatomaceous earth (  / …   Wikipedia

• Metallography — A micrograph of bronze revealing a cast dendritic structure Metallography is the study of the physical structure and components of metals, typically using microscopy. Ceramic and polymeric materials may also be prepared using metallographic… …   Wikipedia

• emery — /em euh ree, em ree/, n. a granular mineral substance consisting typically of corundum mixed with magnetite or hematite, used powdered, crushed, or consolidated for grinding and polishing. [1475 85; < MF emeri, OF esmeril < VL *smericulum, equiv …   Universalium

• Emery — /em euh ree, em ree/, n. a male or female given name. * * * Granular rock consisting of a mixture of the mineral corundum (aluminum oxide, Al2O3) and iron oxides such as magnetite (Fe3O4) or hematite (Fe2O3). It is a dark, dense substance that… …   Universalium