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

Published online by Cambridge University Press:  10 February 2011

P. Toro ,
A. Pérez ,
G. Baeza ,
G. Piderit  and
P. Rojas
P. Toro
Affiliation:
Departamento Química Básica. Universidad de Chile, Santiago. Chile.56-2-6994119
A. Pérez
Affiliation:
Departamento Química Básica. Universidad de Chile, Santiago. Chile.56-2-6994119
G. Baeza
Affiliation:
Departamento Química Básica. Universidad de Chile, Santiago. Chile.56-2-6994119
G. Piderit
Affiliation:
Comisión Chilena de Energía Nuclear. Casilla 188-D. Santiago. Chile.
P. Rojas
Affiliation:
Comisión Chilena de Energía Nuclear. Casilla 188-D. Santiago. Chile.
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Abstract

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 309
Copyright
Copyright © Materials Research Society 1996

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