Si3N4 Whisker Upper Layer Formation on a SiC-Al2O3 Porous Body

Autor: A. Perez, P. Rojas, G. Baeza, G. Piderit, Patricio Toro
Rok vydání: 1996
Předmět:
Zdroj: MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
ISSN: 1946-4274
0272-9172
DOI: 10.1557/proc-431-309
Popis: A thin upper layer on a SiC-A12O3 porous substrate was formed by spray deposition of a Si-C composite or SiC fine powder 55.0 wt% total powder suspension. The formation of a compact layer of Si3N4 whisker or a SiC smaller pore size than the porous substrate was obtained under thermal treatment up to 1400°C for 3–4 h in a nitrogen or argon gas environment, respectively. SEM microstructure observations and a qualitative (DRX-EDAX) analysis of both sintered porous bodies were performanced to confirm the nature of both layers.
Databáze: OpenAIRE