中文摘要：

利用光热检测技术测量了钛酸钡材料的导热性能，得到了不同成型压力、烧结温度以及不同掺杂量下的钛酸钡材料的热扩散率．研究了钽掺杂对钛酸钡材料导热性能的影响，发现了钽元素掺杂量小于1．5mol％时，钛酸钡材料的热扩散率随掺杂量的增加而增大，当钽元素掺杂量大于1．5mol％时，热扩散率随掺杂量的增加而减少。对钛酸钡材料的导热性能做了进一步的分析．

英文摘要：

The thermal diffusivities of BaTiO3 materials are measured by photothermal technique at different pressures, sintering temperatures and tantalum doping quantities. The effect of tantalum doping on thermal conduction of BaTiO3 materials is studied in this paper. When tantalum doping quantity is less than 1.5mol%, the diffusivity of BaTiO3 increase with the increase of the tantalum doping. When tantalum doping quantity is greater than 1.5mol%, the diffusivity of BaTiO3 decreases with the increase of the tantalum doping. The experimental results of doped BaTiO3 materials are analyzed and discussed.