METHODS OF FORMING ALUMINUM OXYNITRIDE-COMPRISING BODIES INCLUDING METHODS OF FORMING A SHEET OF TRANSPARENT ARMOR

摘要

The invention includes methods of forming an aluminum oxynitride- comprising body. For example, a mixture is formed which comprises A:B :C in a respective molar ratio in the range of 9:3.6-6.2:0.1- 1.1, where 'A' is A1₂O₃, 'B ' is A1N, and 'C' is a total of one or more of B₂O₃, SiO₂, Si-A1-O-N, and TiO₂. The mixture is sintered at a temperature of at least 1,60O°C at a pressure of no greater than 35.15 kg/cm² effective to form an aluminum oxynitride-comprising body which is at least internally transparent and has at least 99% maximum theoretical density.