摘要
对Ｂ_２Ｏ_３－Ｍｇ－Ｃ体系和Ｂ_２Ｏ_３－Ｍｇ体系不同加热速率下的ＤＴＡ曲线进行了分析．发现Ｂ_２Ｏ_３－Ｍｇ－Ｃ体系的自蔓延高温反应中，温度略低于６５０℃时Ｍｇ与Ｂ_２Ｏ_３发生强放热反应，释放出单质 Ｂ；然后中间态 Ｂ与 Ｃ通过固态扩散反应生成 Ｂ_４Ｃ．
The DTA curves of B_2O_3 - Mg - C and B_2O_3- Mg at different heating rates were analyzed. And in the SHS process of B_2O_3 - Mg - C system, Mg reacts with B_2O_3 firstly when the temperature rises to 650, with much heat released and then, B.C is formed by intreditate B reacting with C by solid diffusion.
出处
《材料科学与工艺》
EI
CAS
CSCD
1999年第2期69-70,共2页
Materials Science and Technology
