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DEFINITION

Ceramic materials are inorganic and non-metallic. Usually they are shaped from the "green body" at room temperature and acquire their typical properties during a sintering process at high temperatures. Technical Ceramics means ceramic products made for technical application.

In accordance with their chemical composition the technical ceramic materials can be divided into main groups :

SILICATE-CERAMICS

These materials from natural raw materials combine the basic electrical, mechanical and thermal properties of technical ceramics. Fundamental ingredients of this multi-phase material are clay, kaolin, as well as feldspar and soapstone as silicate carrier. Further ingredients such as alumina and zirconia (ZrSiO4) are added to achieve specific properties.
Isolated rush

OXIDE CERAMICS

The material of this group consist 90% of single phase and single component metal oxides. These materials are glass-phase low or glass-phase free. Synthetic raw materials with a high level of purity lead to an even structure with very good properties at a very high sintering temperature.
Oxide ceramics

NONOXIDE CERAMICS

Ceramic materials e.g. compounds of silicon and aluminium with nitrogen or carbon belong to this group. In general nonoxide ceramics demonstrate a high share of covalency bonding which provides them with very good mechanical properties, even when being used at high temperatures. Amongst nonoxide ceramics are:
--& gt;
CARBIDE
--& gt;
NITRIDE
Kostruktionsteile
Overview of Technical Ceramic Materials
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10. Mai 2005

info@keramverband.de
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