For an evaluation of a thermal conductivity of Zr + 30 vol% ZrO2 simulated inert matrix nuclear fuel pellet, a simulated fuel pellet was fabricated using a hot-pressing method at 800°C in a vacuum and at a 20 MPa...For an evaluation of a thermal conductivity of Zr + 30 vol% ZrO2 simulated inert matrix nuclear fuel pellet, a simulated fuel pellet was fabricated using a hot-pressing method at 800°C in a vacuum and at a 20 MPa load. And several thermophysical properties of the simulated inert matrix fuel pellet were measured and calculated. The thermal diffusivity and linear thermal expansion as a function of temperature of the simulated fuel pellet were measured using a laser flash method and a dilatometry, respectively. Finally, based on the experimental data, the thermal conductivity of the simulated inert matrix fuel pellet was calculated and evaluated.展开更多
以聚硅氧烷为先驱体,采用先驱体转化法制备了SiCf/Si O C陶瓷复合材料。研究了惰性填料(SiC、SiO2及SiO2空心微珠)对材料的力学性能及热性能的影响。微观结构的分析表明,填料引起的界面结构与密度的变化是影响SiCf/Si O C复合材料性能...以聚硅氧烷为先驱体,采用先驱体转化法制备了SiCf/Si O C陶瓷复合材料。研究了惰性填料(SiC、SiO2及SiO2空心微珠)对材料的力学性能及热性能的影响。微观结构的分析表明,填料引起的界面结构与密度的变化是影响SiCf/Si O C复合材料性能的主要原因。展开更多
文摘For an evaluation of a thermal conductivity of Zr + 30 vol% ZrO2 simulated inert matrix nuclear fuel pellet, a simulated fuel pellet was fabricated using a hot-pressing method at 800°C in a vacuum and at a 20 MPa load. And several thermophysical properties of the simulated inert matrix fuel pellet were measured and calculated. The thermal diffusivity and linear thermal expansion as a function of temperature of the simulated fuel pellet were measured using a laser flash method and a dilatometry, respectively. Finally, based on the experimental data, the thermal conductivity of the simulated inert matrix fuel pellet was calculated and evaluated.
