sintered alumina

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• Transparent alumina — is a transparent form of aluminium oxide, Al2O3. In bulk, solid form, alumina is a colorless, transparent solid. Rubies and sapphires are two forms, containing different impurities, which occur naturally. Rubies and sapphires can also be… …   Wikipedia

• Beta-alumina solid electrolyte — (BASE) is a fast ion conductor material used as a membrane in several types of molten salt electrochemical cell. There is no known substitute.β Alumina ( beta prime prime alumina ) is an isomorphic form of aluminium oxide (Al2O3) a hard… …   Wikipedia

• Metal-halide lamp — A metal halide gas discharge lighting system provides illumination for a college baseball game at Olsen Field in College Station, Texas, United States. Note the various colors of the lights as they warm up. Metal halide lamps, a member of the… …   Wikipedia

• Rayleigh scattering — This article is about the optical phenomenon. For the magnetic phenomenon, see Rayleigh law. For the stochastic distribution, see Rayleigh distribution. For the wireless multipath propagation model, see Rayleigh fading. Rayleigh scattering causes …   Wikipedia

• Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …   Wikipedia

• fluorine — /floor een, in, flawr , flohr /, n. Chem. the most reactive nonmetallic element, a pale yellow, corrosive, toxic gas that occurs combined, esp. in fluorite, cryolite, phosphate rock, and other minerals. Symbol: F; at. wt.: 18.9984; at. no.: 9.… …   Universalium

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

• Powder metallurgy — is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… …   Wikipedia

• Sintering — is a method used to create objects from powders. It is based on atomic diffusion. Diffusion occurs in any material above absolute zero but it occurs much faster at higher temperatures. In most sintering processes the powdered material is held in… …   Wikipedia

• Ceramic matrix composite — Fracture surface of a fiber reinforced ceramic composed of SiC fibers and SiC matrix. The fiber pull out mechanism shown is the key to CMC properties …   Wikipedia

• Ceramic engineering — Simulation of the outside of the Space Shuttle as it heats up to over 1,500 °C (2,730 °F) during re entry into the Earth s atmosphere Ceramic engineering is the science and technology of creating objects from inorganic, non metallic… …   Wikipedia