【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.更多还原

【Abstract】 The thermal diffusivities of BaTiO-3 materials are measured by photothermal technique at different pressures, sintering temperatures and tantalum doping quantities. The effect of tantalum doping on thermal conduction of BaTiO-3 materials is studied in this paper. When tantalum doping quantity is less than 1.5mol%, the diffusivity of BaTiO-3 increase with the increase of the tantalum doping. When tantalum doping quantity is greater than 1.5mol%, the diffusivity of BaTiO-3 decreases with the increase of the tantalum doping. The experimental results of doped BaTiO-3 materials are analyzed and discussed.更多还原