High-Temperature Corrosion of AlN-Based Composite Ceramic in Air and in Combustion Products of Commercial Fuel. Part 2. Corrosion of Ceramic Composites in the AlN – SiC – TiB2 System in Air and in Combustion Products of Kerosene and Diesel Fuel

Corrosion resistance has been examined for composites in the AlN – SiC – TiB₂ ternary system. They have high corrosion resistance in air up to 1500°C because mullite and β-tialite are formed in the outer layer of scale. Their corrosion resistance substantially exceeds that of other ceramic materials because of the formation of the mullite phase on prolonged exposure (up to 200 h) to gaseous combustion products from kerosene and diesel fuel in the presence of sea salt at 900 and 1000°C. Also, AlN – SiC – TiB₂ ceramics have higher bending strength than does AlN – TiB₂ ceramic.