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1994
Book
Titel
Silicon nitride materials featured by superior creep and fracture resistance at 1400 degree Celsius
Titel Supplements
Informationsblatt.
Abstract
The two materials investigated exhibit an acceptable niveau in fracture toughness in combination with a high creep resistance at 1400 degree C. As possible reasons are supposed: the crystallization of the grain boundary phase; the microstructural design of the materials; the formation of different grain boundary compositions between the different grains (Si3N4 and SiC, alpha- and beta-Si3N4-grains). Meanwhile the alpha-beta-sialon suffers a strong oxidation enhanced SCG the nanocomposite material was found as a promising candidate for long-term applications.