FABRICATION AND GRAIN-GROWTH BEHAVIOR OF FINE-GRAINED SILICON-NITRIDECERAMICS

Authors
MITOMO M NISHIMURA T HIROTSURU H
Citation
M. Mitomo et al., FABRICATION AND GRAIN-GROWTH BEHAVIOR OF FINE-GRAINED SILICON-NITRIDECERAMICS, European journal of solid state and inorganic chemistry, 32(7-8), 1995, pp. 693-700
Citations number
18
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
European journal of solid state and inorganic chemistry → ACNP
ISSN journal
09924361
Volume
32
Issue
7-8
Year of publication
1995
Pages
693 - 700
Database
ISI
SICI code
0992-4361(1995)32:7-8<693:FAGBOF>2.0.ZU;2-B
Abstract
Fine-grained silicon nitride ceramics with the average grain size of 1 80 nm or smaller were prepared by hot-pressing very fine, uniform powd ers at low temperatures. The presence of large grains or phase transfo rmation from alpha to beta in fine-grained ceramics accelerated the ab normal grain growth in the form of elongated large grains. The stable microstructure of fine-grained ceramics from fine beta powder was show n by the low rate of grain growth during annealing at 1800 degrees C.