Phase equilibria of precursor-derived Si-(B-)C-N ceramics

被引：31
|
作者：
Seifert, HJ
Peng, JQ
Golczewski, J
Aldinger, F
机构：
[1] Univ Stuttgart, Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany
[2] Univ Stuttgart, Inst Nichtmet Anorgan Mat, Pulvermet Lab, D-70569 Stuttgart, Germany
来源：
APPLIED ORGANOMETALLIC CHEMISTRY | 2001年 / 15卷 / 10期
关键词：
phase equilibria; Si-B-C-N ceramics; thermolysis; Calphad;
D O I：
10.1002/aoc.238
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Phase equilibria and phase reactions of precursor-derived ceramics of the Si-C-N and the Si-B-C-N systems at temperatures higher than 1700 K are described. CALPHAD (CALculation of PHAse Diagrams) results confirm quantitatively the data from thermogravimetry and differential thermal analysis of precursor-derived Si-C-N ceramics. A model for explanation of the thermal stability of specific Si-B-C-N precursor ceramics was developed. Phase reactions of polymeric precursors of the Si-C-N-H system were calculated and compared with analyses concerning the composition of the solid ceramic and gaseous products from thermolysis at a temperature of 1323 K. The results show that a semi-quantitative description of the thermolysis process is possible. Copyright (C) 2001 John Wiley & Sons, Ltd.
引用
收藏
页码：794 / 808
页数：15
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