Development of Si-B-C-N ceramics supported by phase diagrams and thermochemistry

被引：65

作者：

Seifert, HJ

Lukas, HL

Aldinger, F

机构：

[1] Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Nichtmet Anorgan Mat, Pulvermet Lab, D-70569 Stuttgart, Germany

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1998年 / 102卷 / 09期

关键词：

computer experiments; materials properties; phase diagrams; thermodynamics;

D O I：

10.1002/bbpc.19981020942

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To explain the crystallization behaviour and phase relationships of precursor derived Si-B-C-N ceramics, ln(pN(2))-T diagrams were calculated. The results can be used to optimize the chemical composition and the physico-chemical conditions for heat treatment. Stabilization of specific phase assemblages requires careful adjustment of the N-2 partial pressure during heating and cooling. The high thermal stability of silicoboron carbonitrides can be explained by their particular microstructure and the resulting stabilization of Si3N4.

引用

页码：1309 / 1313

页数：5

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