VAPOR-PHASE REDUCTION AND THE SYNTHESIS OF BORON-BASED CERAMIC PHASES .1. THE PHASE-EQUILIBRIA IN THE B-C-N-O SYSTEM

被引：24

作者：

YOON, SJ ^{[1
]}

JHA, A ^{[1
]}

机构：

[1] BRUNEL UNIV,DEPT MAT TECHNOL,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

来源：

JOURNAL OF MATERIALS SCIENCE | 1995年 / 30卷 / 03期

关键词：

D O I：

10.1007/BF00356318

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermodynamic calculations have been performed to establish the partial pressure relationships between the gaseous species BO and CO at an isotherm during the reduction-nitridation of boric anhydride. This relationship enables us to establish the condition for the formation of boron nitride ceramic phase by selecting a suitable nitriding atmosphere. Relevant Gibbs free-energy equations have also been considered for establishing the phase equilibrium relationships over a wide range of temperature in the B-C-N-O system. The importance of BO gas formation and its subsequent reduction to BN is also discussed.

引用

页码：607 / 614

页数：8