Low Cost SiAlON from Pyrophyllite with High Hardness and Good Corrosion Resistance
Bulk ceramic materials on the base of β-sialon were prepared from hydrosilicates. Except of some mechanical properties (HV, KIC) also the corrosion resistance of β-sialon against Cl-, iron and steel was investigated. The results were compared with β-sialon of similar composition z = 3.8, which was prepared from commercial powders Si3N4, AlN and Al2O3. The differences in mechanical properties of β-sialons prepared from natural hydrosilicates and synthetic powders are discussed.
J. Dusza, R. Danzer and R. Morrell
J. Křest'an et al., "Low Cost SiAlON from Pyrophyllite with High Hardness and Good Corrosion Resistance", Key Engineering Materials, Vol. 290, pp. 312-315, 2005