| Popis: |
This paper summarizes the results of a program designed to investigate methods of fabricating ceramic materials with structurally useful thermal and mechanical properties from solid solutions of silicon, nitrogen, and metal oxides. The investigations included studies of the relationship of precursor powders and processing methods to the resulting composition and microstructure of fabricated specimens and, in turn, the relationship of these compositions and microstructures to the mechanical properties of the fabricated specimens. Emphasis was placed throughout the program on the use of conventional but controlled ceramic powder processing, fabrication of green shapes, and firing procedures, to achieve high density in the components using pressureless sintering techniques. Compositions within the silicon-aluminum-oxygen-nitrogen system, generally referred to as “sialons”, were studied. |
