通过热力学数据的预报与计算，对ＺｒＯ２－Ｔｉ体系的相间热力学稳定性进行了分析，并确定了材料合成的热力学条件．在此基础上常压烧结合成了不同组分配比的ＺｒＯ２－Ｔｉ系复合材料，并采用ＸＲＤ、ＳＥＭ、ＴＥＭ等方法对材料的显微结构进行了表征．ＺｒＯ
－Ｔｉ系均质复合材料由α－Ｔｉ相，四方ＺｒＯ２相和少量的单斜ＺｒＯ２相组成．ＸＲＤ和ＴＥＭ分析表明，组元Ｔｉ和ＺｒＯ２之间没有发生明显的化学反应，具有良好的化学相容性．
The standard Gibbs free energy of Ti2O was predicted according to the quasi-parabola rule.
The co-existing region of Ti and ZrO2 was obtained by thermodynamic calculation to determine the synthesis conditions of this composite.
ZrO2-Ti system composites sintered under ordinary pressure were prepared by a powder metallurgical method. The gradient distribution of
composition, the interfacial microstructure between layers and the combining state of phases between Ti and ZrO2 were investigated by means of
XRD, SEM, EDS, TEM and so on. The experimental results show that the joint between Ti and ZrO2 phases is physical in this composite. ZrO2 mainly
exists as a tetragonal phase.
参考文献
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