What Is Alumina Used For In Ceramics

Sintox fa ballistic 95 alumina.

What is alumina used for in ceramics.

Stronger and more robust than glass a950 alumina ceramic is good for making ceramic to metal feedthroughs x ray component feedthroughs high voltage bushings and products for implantable medical device applications. Alumina is the most well known and most commonly used fine ceramic material. Known as alpha alumina in materials science communities or alundum in fused form or aloxite in the mining and ceramic communities aluminium oxide finds wide use. It also serves as the raw material for a broad range of advanced ceramic products and as an active agent in chemical processing.

In fact alumina ceramics are as hard as sapphire making them excellent choices for severe wear applications such as mill and chute linings bearings and wear plates in addition to those applications already mentioned. These engineered ceramic materials are formulated for especially harsh applications that require increased wear resistance thermal and chemical stability and many of the other characteristics alumina possesses. It is ideal for wear resistant inserts or products. Typical applications inlcude electrical insulators.

Alumina ceramics are among the hardest materials known harder than tool steel or tungsten carbide. Abrasion resistant alumina is a very hard ceramic and is excellent at resisting abrasion. It is ideal for wear resistant inserts or products. In 2004 anatoly rosenflanz and colleagues at 3m used a flame spray technique to alloy aluminium oxide or alumina with rare earth metal oxides in order to produce high strength glass ceramics with good optical properties.

It has been used for decades in electrical components for its high electrical insulation and is widely used in mechanical parts for its high strength and corrosion and wear resistance. It has the same sintered crystal body as sapphire and ruby. Electrical insulator alumina is commonly used as a high temperature electrical insulator particularly the higher purity grades which offer better resistivity. Alumina also called aluminum oxide synthetically produced aluminum oxide al 2 o 3 a white or nearly colourless crystalline substance that is used as a starting material for the smelting of aluminum metal.

Alumina s combination of hardness high temperature operation and good electrical insulation makes it useful for a wide range of applications. The method avoids many of the problems encountered in conventional glass forming and may be extensible to other oxides.