Corrosion of silicon nitride materials in acidic and basic solutions and under hydrothermal conditions

被引：0
|
作者：
Herrmann, M [1 ]
Schilm, J [1 ]
Michael, G [1 ]
机构：
[1] Fraunhofer Inst Keram Technologien & Sinterwerkst, Dresden, Germany
来源：
SILICON-BASED STRUCTURAL CERAMICS FOR THE NEW MILLENNIUM | 2003年 / 142卷
关键词：
D O I：
暂无
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 corrosion behaviour of gas pressure sintered silicon nitride ceramics with different amounts and compositions of the grain boundary phases was analysed in acids, bases and under hydrothermal conditions. The investigations show, that the corrosion is strongly affected by the SiO2 content in the grain boundary phase and the amount of the additives. The differences in the corrosion kinetics are correlated with the structure of the formed corrosion layer. Some correlations between composition and corrosion stability in the different media are given.
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页码：213 / 221
页数：9
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