Sintering of Si3N4 ceramics in air atmosphere furnace

Authors
Wada, S Hattori, T Yokoyama, K
Citation
S. Wada et al., Sintering of Si3N4 ceramics in air atmosphere furnace, J CERAM S J, 109(3), 2001, pp. 281-283
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
ISSN journal
09145400 → ACNP
Volume
109
Issue
3
Year of publication
2001
Pages
281 - 283
Database
ISI
SICI code
0914-5400(200103)109:3<281:SOSCIA>2.0.ZU;2-V
Abstract
Si3N4 ceramics with Y2O3 and Al2O3 additives set in an Al2O3 sagger with a Si3N4 powder bed were successfully sintered in air atmosphere furnace at 16 00-1700 degreesC. Bulk densities of the sintered Si3N4 ceramics were 3.10-3 .16 g/cm(3) which were similar to the densities of those sintered in a nitr ogen gas furnace of 0.1 MPa. No heterogeneous surface layer was observed. W hen the sagger and powder bed are structured so that SiO gas continuously g enerated during the sintering, Si3N4 ceramics can be sintered in air withou t serious oxidation.