alumina refractory
41List of countries by aluminium oxide production — Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula aluminium2oxygen3. It is also commonly referred to as alumina or aloxite [http://www.chemindustry.com/chemicals/14835.html Aloxite ] , ChemIndustry.com database,… …
42silicon carbide — Chem. a very hard, insoluble, crystalline compound, SiC, used as an abrasive and as an electrical resistor in objects exposed to high temperatures. [1900 05] * * * ▪ chemical compound Introduction exceedingly hard, synthetically produced… …
43transition element — Chem. any element in any of the series of elements with atomic numbers 21 29, 39 47, 57 79, and 89 107, that in a given inner orbital has less than a full quota of electrons. Also called transition metal. [1920 25] * * * Any chemical element with …
44advanced structural ceramics — Introduction ceramic materials that demonstrate enhanced mechanical properties under demanding conditions. Because they serve as structural members, often being subjected to mechanical loading, they are given the name structural ceramics.… …
45optical ceramics — Introduction advanced industrial materials developed for use in optical applications. Optical materials derive their utility from their response to infrared, optical, and ultraviolet light. The most obvious optical materials are… …
46aluminum — A white silvery metal of very light weight; atomic no. 13, atomic wt. 26.981539. Many salts and compounds are used in medicine and dentistry. [L. alumen, alum] a. acetate used as a disinfectant by embalmers; proposed as …
47Slag — is the by product of smelting ore to purify metals. They can be considered to be a mixture of metal oxides; however, they can contain metal sulfides (see also matte) and metal atoms in the elemental form. While slags are generally used as a waste …
48COSHH — The Control of Substances Hazardous to Health Regulations 2002 United Kingdom Parliament Citation: 2002 No. 2677 Primary legislation: European Communities Act 1972, Health and Safety at Work etc. Act 1974 Introduced by …
49Sialon — ceramics are a specialist class of high temperature refractory materials, with high strength (including at temperature), good thermal shock resistance and exceptional resistance to wetting or corrosion by molten non ferrous metals, compared to… …
50mullite — /mul uyt/, n. a rare clay mineral, aluminum silicate, Al6Si2O13, produced artificially during various melting and firing processes: used as a refractory. Also called porcelainite. [1924; after MULL, source of the rocks in which it was first… …
