【摘要】 在全组成范围内对 Ｍｏ／ＰＳＺ系两相复合材料进行了组织结构的定量表征和热物理性能及高温力学性能的测试．详细讨沦了两相复合材料在不同温度下热传导待性和变形、破坏特性与复合组织的依存关系 实验结果证明．Ｍｏ／ＰＳＺ系复合材科的热传导率、变形及破坏举动等特性不仅与测定温度和组成有关、而且强烈依存于复合材料的组织特征。更多还原

【Abstract】 For the optimum designing of functional graded materials (FGMs) with thermal barrier and thermal stress release functions, the compositional dependence of the thermal and mechanical properties of sintered Mo/PSZ composites was investigated with an emphasis on the microstructural effect. The thermal conductivity exhibited a sigmoid curve against composition. The compositional dependence was discussed in relation to the theories that have been proposed so far. The high temperature deformation and fracture behavior were evaluated up to 1573 K by means of modified small punch (MSP) test. The brittle to ductile transition temperatures of the composites were found to be more closely related to the continuity of constituent phases rather than the nominal composition.更多还原