Describes high temperature corrosion of ceramics. In addition to pure single crystals or CVD materials, typical engineering materials of various purities were also studied. The environments used to produce corrosion were selected based on the likelihood of their being encountered in practice and their severity. The ceramic materials developed corrosion resistance by being immune to the environment or by developing passivity.Experimental Procedures Gaseous Corrosion Hot Corrosion of Silica Hot Corrosion of Alumina Hot Corrosion of Silicon Carbide and Silicon Nitride Appendix A: Gaseous Corrosion of Silica and Alumina in Sulfur Oxide Environments Appendix B: Hot Corrosion of Silica Appendix C: Hot Corrosion of Alumina Appendix D: Hot Corrosion of Silicon Nitride and Silicon Carbide Appendix E: PublicationsDescribes high temperature corrosion of ceramics