To improve the performance of Mo-based cermets, Mo-(Ni)-Al₂O₃ cermets were prepared with raw materials of nano-sized Al₂O₃ powder. The effects of Al₂O₃ and Ni additions on the densification behavior, microstructure, bending strength, and hardness of the Mo-(Ni)-Al₂O₃ cermets were experimentally analyzed. The results showed the content of Al₂O₃ had a great influence on the degree of densification of Mo-Al₂O₃ cermets at the sintering temperature of 1600°C. In addition, the Al₂O₃ particles were distributed evenly in the matrix of Mo-based cermets, which refined the grains of Mo and increased the hardness of cermets. Because of the weak interfacial bonding strength between Al₂O₃ ceramic phase and Mo metal phase, the bending strength decreased continuously with increasing Al₂O₃ content. However, Ni addition improved the wetting and adhesion of Al₂O₃ and Mo. With the addition of Ni, the relative density increased, and thus hardness and bending strength were improved.

为了提高Mo基金属陶瓷的性能，以纳米Al ₂ O ₃粉末为原料制备了Mo-(Ni)-Al ₂ O ₃金属陶瓷。实验分析了Al ₂ O ₃和Ni添加量对Mo-(Ni)-Al ₂ O ₃金属陶瓷的致密化行为、显微组织、弯曲强度和硬度的影响。结果表明，Al ₂ O ₃的含量对Mo-Al ₂ O ₃金属陶瓷在1600℃烧结温度下的致密化程度有很大影响。此外，Al ₂ O ₃颗粒均匀分布在钼基金属陶瓷基体中，细化了钼的晶粒，提高了金属陶瓷的硬度。由于Al ₂ O ₃陶瓷相与Mo金属相的界面结合强度较弱，弯曲强度随着Al ₂ O ₃含量的增加而不断降低。然而，Ni的加入提高了Al ₂ O ₃和Mo的润湿性和粘附性。Ni的加入使相对密度增加，从而提高了硬度和弯曲强度。