aluminum oxide


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aluminum

 (Al) [ah-loo´mĭ-num]
a chemical element, atomic number 13, atomic weight 26.982. (See Appendix 6.) It occurs naturally in many foods in low concentrations and is also present in many pharmaceuticals and drinking water. High levels in the body can be toxic; see aluminum poisoning.
aluminum acetate solution Burow's solution.
basic aluminum carbonate gel an aluminum hydroxide–aluminum carbonate gel, used as an antacid, for treatment of hyperphosphatemia in renal insufficiency, and to prevent phosphate urinary calculi.
aluminum chloride a topical astringent solution and antiperspirant.
aluminum chlorohydrate an antiperspirant; called also aluminum hydroxychloride.
aluminum hydroxide the hydroxide of aluminum, used as an antacid and phosphate binder; the official preparation is aluminum hydroxide gel.
aluminum hydroxide gel a preparation of aluminum hydroxide in suspension or dried form, used as an antacid in the treatment of peptic ulcer and gastric hyperacidity and as a phosphate binder in treatment of phosphate nephrolithiasis.
aluminum hydroxychloride aluminum chlorohydrate.
aluminum oxide Al2O3, occurring naturally as various minerals; used in the production of abrasives, refractories, ceramics, catalysts, to strengthen dental ceramics, and in chromatography.
aluminum phosphate gel a water suspension of aluminum phosphate and some flavoring agents; used as a gastric antacid, astringent, and soothing agent.
aluminum poisoning the toxic effects of high levels of aluminum or its compounds in the body. In the gastrointestinal tract aluminum inhibits absorption of electrolytes; inhalation of aluminum fumes may cause pulmonary fibrosis; and aluminum in the bloodstream may lead to serious neurological symptoms, such as in dialysis encephalopathy.
aluminum silicate the silicate salt of aluminum, found in nature in several different hydrated forms that have pharmaceutical or dental uses; see attapulgite, fuller's earth, and kaolin.
aluminum subacetate a compound used as an astringent, diluted with water.
aluminum sulfate a compound used as an astringent solution and antiperspirant.

a·lu·mi·num ox·ide

a compound of aluminum used as an abrasive, as a refractory, and in chromatography.
Synonym(s): alumina

aluminum oxide

(Al2O3), a compound occurring naturally as various minerals. It is used in the production of abrasives, refractories, ceramics, and catalysts and in chromatography. It is also used to strengthen dental ceramics.

aluminum oxide,

n a metallic oxide that includes alpha single crystal (an inert, biocompatible strong ceramic material used in the fabrication of some endosseous implants) and polycrystal (a constituent of dental porcelain that increases viscosity and strength).
References in periodicals archive ?
Vitrified aluminum oxide has been the traditional choice for the past 20 years, available in either a fused aluminum oxide abrasive grit or seeded gel (SG) abrasive, both held together by a vitrified glass bond.
Four factors were varied to develop the experimental design: wood species (two levels: maple and pine), abrasive (two levels: aluminum oxide and silicon carbide), belt speed (two levels: 2,000 and 2,600 feet per minute [fpm]), and interface pressure (four levels: 0.
Good mechanical strength makes it tolerant of careless handling and its performance is more consistent, predictable and reliable than those of aluminum oxide and silicon carbide, The corrosion-resistant binder expands the range of outer seal rings in pumps for mining and construction applications, and pumps submersed in seawater and acidic liquids.
The aluminum oxide which Indonesia imports is totally absorbed by PT Indonesia Asahan Aluminium (Inalum) for consumption by its alumina smelting plant in North Sumatra.
A premium P-graded aluminum oxide abrasive is used to provide cool, aggressive cutting action.
Along with the increase of the output of China's aluminum oxide industry, the dependency on import aluminum ores has increased drastically; it is predicted that the external dependency in 2008 will increase to 47.
Aluminum oxide contamination in aluminum casting alloys has long been an area of major concern to aluminum casting facilities.
The researchers chose aluminum oxide, a material tougher than nacre's calcium carbonate, for 5-to-7.
It consists of three layers: a thick aluminum base, which acts as a mirror; a transparent mid-layer of aluminum oxide, which reflects different colors depending on thickness; and a top semi-transparent aluminum layer.
Designed for use on aluminum, titanium, stainless steels, and highly alloyed parts, these points are offered with aluminum oxide or silicon carbide abrasives in a very fine- to coarse-grain sizes with soft, medium, and hard bodies.
Like other products in the Altro safety flooring range, Altro Impressionist II has aluminum oxide and colored quartz throughout the thickness, with silicon car bide in the surface to provide durability and long-term slip resistance.
A new, full-resin bond increases its ability to hold the aluminum oxide P-graded grain onto the cloth backing.