Alumina (Aluminum Oxide Al2O3) is the most important oxide-ceramic material and an important component in our manufacturing program. This material is made from synthetic raw materials. Alumina content of our material is 80 - 99 % depending on the purity of the raw materials. Alumina is fired at 1,600° to 1,750° C. Components made of aluminum oxide can be glazed to obtain dirt repellent surfaces.
Outstanding properties in accordance with DIN VDE 0035/ DIN EN 60 672 are:
Mechanical, chemical, thermal and electrical properties make alumina the ideal material for any application.
These excellent properties make it ideally suited for use in ignition insulators, pressure-resistant controller components, sliding and sealing rings, axles, shafts, bearing shells and antenna shafts.
Advanced alumina: A100 variant
We have successfully developed a new ceramic material - A100 enhances the outstanding properties of alumina when it comes to hardness and wear resistance.
A100, the new C799 high-performance ceramic, is based on an optimized method for the preparation of raw material and a special polishing technique is used to finish the surface of manufactured parts. Raw material preparation produces an extremely fine-grade powder with a D50 value significantly below 1 µm and high purity that is used as source material.
The Al2O3 content of A100 is higher than 99.97 % and allows very high density close to the theoretical density of 3.99 g/cm³ resulting in better hardness and strength properties. Components made of A100 feature perfect, non-porous surfaces due to high material density and special polishing. A100 is ideally suited for passive and active components in textile machines exposed to high stresses from wear.
A comparison of the ceramic structure, polished surfaces ofC799 Standard/C799 A100