Perfect materials for any purpose
Changing requirement profiles for a variety of application purposes call for materials combining various properties. We are convinced that our wide materials program offers an ideal solution for any application, both technically and economically.
Rubalit® A 1896 is an aluminum oxide ceramic with an optimum price/performance ratio. Its outstanding properties are: low density, low weight, high corrosion and wear resistance, excellent electrical isolation and anti-friction properties for sliding materials such as sintered metal and carbon.
In contrast, Rubalit® A 1999,5 is mechanically stronger, features a higher heat conductivity and is more corrosion resistant. Hence, this high-purity aluminum oxide ceramic with carbon materials is especially suitable for plain bearings and seal rings.
ZN 40 is a zirconium oxide ceramic with an excellent surface finish and a higher strength than aluminum oxide. Its good crack resistance and anti-friction properties combined with steel-like thermal expansion attributes make this material an ideal partner for bearing composites working at elevated temperatures.
ROCAR® S/ST (SSiC) is resistant to all chemical media. Since no metallic silicon is present in the matrix, it can be used at temperatures up to 1,600 °C without impaired strength. Our ROCAR® ST is remarkable for its excellent voluem-production axial dry-press performance which, in turn, results in process reliability combined with lower production costs.
SL 200 ST is a silicon nitride ceramic especially suitable for components exposed to mechanical stress and engine-specific applications even at elevated temperatures. It is characteristic for its high strength and crack resistance as well as its resistance to sudden changes in temperature.
In ROCAR® SiC (SiSiC), the pore cavities are filled with metallic silicon. Since shrinkage during firing is minimal, complex components can be produced with low tolerances. Its maximum application temperature is 1,350 °C. However, it is not suitable for use in highly alkaline media because of its content of metallic silicon.