利用自蔓延高温燃烧合成结合机械压力方法制备了TiC -Ni金属陶瓷 ,研究了TiC-Ni金属陶瓷材料的热膨胀性质随温度和组成的变化关系。结果表明 ,材料的热膨胀系数随温度的升高单调递增 ,上升相同温度情况下 ,材料的热膨胀系数随Ni含量的增加而增加 TiC-Ni cermets were prepared by a self-propagating high-temperature combustion combined with mechanical pressure method. The thermal expansion properties of TiC-Ni cermets were studied with temperature and composition. The results show that the coefficient of thermal expansion increases monotonically with increasing temperature, and the coefficient of thermal expansion increases with increasing Ni content at the same temperature