Premium
Mechanism of Grain Growth of β‐SiAlON
Author(s) -
Einarsrud MariAnn,
Mitomo Mamoru
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03953.x
Subject(s) - grain growth , sialon , microstructure , materials science , annealing (glass) , grain size , homogenization (climate) , metallurgy , mineralogy , chemistry , ceramic , biodiversity , ecology , biology
The mechanism for grain growth of β‐SiAlON has been investigated by annealing high‐density β‐SiAlON–YAG materials at 1650°C. An observed decrease in grain growth with increasing weight fraction of liquid confirms a diffusion‐controlled growth mechanism in the system. The grain‐growth mechanism is further characterized by the development of large elongated grains in addition to smaller grains. After prolonged heating, an equilibrium maximum grain size is developed causing a homogenization of the microstructure.