Review of Silicon Nitride

Abstract : Review of Silicon Nitride,Croft,William J. ;Cutler,Ivan B. ;ERO-2-73ONRLR-16-73(*Silicon nitrides, Reviews), Crystal structure, Synthesis(Chemistry), Thermal expansion, Thermodynamics, Density, Thermal stability, Ceramic materials, Strength, Refractory materials, Creep strength, Melting point, Hardness, Specific heat, Electrical resistivity, Great Britain, Seals, Gas turbines, Thermal conductivityWith the current engineering effort in developing ceramic materials for vital parts of gas turbine engines, silicon nitride has become a prominent contender for consideration. The properties important for use at high temperatures such as crystal structure, density, thermodynamics, thermal expansion, strength are reviewed. Some of the areas of ignorance and/or controversy are pointed out with the hope of stimulating further research. (Modified author abstract)