THEORY AND TECHNOLOGY OF SINTERING, HEAT TREATMENT, AND THERMOCHEMICAL PROCESSING

SINTERING DENSIFICATION AND MICROSTRUCTURE FORMATION KINETICS IN SILICON NITRIDE CERAMICS

Kril', Yu. K.
Gnilitsya, I. D.

Ivan Franko State Oil and Gas Engineering University, ul. Karpatskaya 15, Ivano-Frankovsk, Ukraine 76019

Powder Metallurgy & Metal Ceramics 41(8):p 360-365, July-August 2002.

Research has been done on how the shrinkage rate and microstructure in the Si₃N₄― Al₂O₃― Y₂O₃are dependent on temperature and nitrogen pressure during sintering. The shrinkage rate curves alter as the activator content varies. Additional densification may occur above 1800°C because of diffusion through the increased amount of liquid.