AlN含量对Ti(C,N)基金属陶瓷组织和性能的影响

Effect of AlN Content on Microstructure and Properties ofTi(C,N)-Based Cermet

摘要: 研究了AlN添加量（0，1%，2%，3%，质量分数）对Ti（C，N）基金属陶瓷硬度、抗弯强度以及抗氧化性能的影响。结果表明：不同AlN添加量下的金属陶瓷主要由Ti（C，N）、Ni₃Al和镍相组成；随着AlN添加量增加，金属陶瓷的硬度增大，抗弯强度先增大后减小，AlN添加量为2%时达到峰值；与未添加AlN相比，添加2%AlN金属陶瓷的氧化质量增加较慢，氧化膜结构更致密，抗氧化性能更好。

Abstract: The effect of AlN addition amount (0,1%,2%,3%, mass fraction) on the hardness, bending strength and oxidation resistance of Ti(C,N)-based cermets was studied. The results show that the cermets with different addition amount of AlN were all mainly composed of Ti(C,N), Ni₃Al and nickel phases. With increasing the addition amount of AlN, the hardness of the cermet increased, and the bending strength increased first and then decreased, reaching the peak value with 2%AlN. The oxidation mass gain of the cermet with 2%AlN increased slowly compared with the without AlN, and the oxide film structure was relatively dense, indicating the better oxidation resistance.