Oxidation of nitride bonded silicon carbide in wet air atmosphere

被引：1

作者：

Gao, W ^{[1
]}

Hendry, A

Holling, G

机构：

[1] Univ Petr Beijing, Beijing, Peoples R China

[2] Univ Strathclyde, Dept Engn Mech, Glasgow G1 1XJ, Lanark, Scotland

[3] CeramCo Ltd, Alexandria G83 0TL, Scotland

来源：

BRITISH CERAMIC TRANSACTIONS | 2002年 / 101卷 / 06期

关键词：

D O I：

10.1179/096797802225004027

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The oxidation behaviour of porous nitride bonded silicon carbide (NBSC) ceramics at 1000 and 1200degreesC in air and wet air (20% water vapour by volume) was investigated. A rapid linear oxidation rate occurred during initial exposure (1-3 h) to air and water vapour and this was found to be followed by either parabolic or asymptotic scale growth. Water vapour influences the oxidation of NBSC: compared to oxidation in air, in wet air a higher weight gain is observed resulting from enhanced permeation of H,61 molecules through the scale, and devitrification of amorphous silica is also enhanced.

引用

页码：231 / 236

页数：6

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