Cu-Zr基体中Al-Ti-B_2O_3体系的反应热力学研究

Study on Reactive Thermodynamics of Al Ti B_2O_3 System in Cu Zr Alloy

为研究ＴｉＢ２／ＣｕＺｒ 复合材料的增强相在ＣｕＺｒ 基体中形成的热力学条件， 采用ＤＴＡ 分析和不同温度下的热爆试验， 研究了ＡｌＴｉＢ２Ｏ３ 体系的反应热力学行为， 并讨论了其反应合成机制。结果表明： 在１１００℃下， 该体系能自动发生反应， 生成产物为ＴｉＢ２ 和少量Ａｌ２Ｏ３ ； 在较低温度反应时， 产物中存在硼化物过渡相。基于热爆工艺参数， 在ＣｕＺｒ 熔体中制备了ＴｉＢ２／ＣｕＺｒ 复合材料。

In order to discuss the thermodynamic parameters of forming TiB\-2 reinforcing phase in the Cu Zr alloy,investigations were carried out on the behaviour of reactive thermodynamics of the Al Ti B\-2O\-3 system using DTA and thermal explosion test at different temperature and the mechanism of the reactive synthesis was also analysed.The result revealed that the reaction can take place automatically at 1100℃,thus forming TiB\-2 and a small quantity of Al\-2O\-3.At low temperature the boride transition phase is present in reaction product.Based on the parameters of thermal explosion test,TiB\-2/Cu Zr composite was produced.