基于WC与M02C对Ti(C,N)基金属陶瓷的组织优化和润湿性改善等方面具有相似的作用,研究了WC和Mo2C的添加对Ti(C,N)基金属陶瓷在高温下显微硬度的影响.结果表明:随着温度的升高,添加WC和M02C后金属陶瓷的高温显微硬度均呈下降趋势,在600~800℃范围内,添加WC后金属陶瓷的高温显微硬度略高于添加Mo2C金属陶瓷的,当温度达到900℃时,两者的显微硬度几乎相同;随着温度的升高,两种金属陶瓷的压痕面积、平均压痕深度均逐渐增加;添加WC后金属陶瓷的高温真应变明显小于添加Mo2C金属陶瓷的,但当温度达到900℃时,两种金属陶瓷的高温变形量接近.
Based on the similar effect of WC and Mo2 C addition on microstructure optimizing and wettability improvement of Ti(C,N)-based cermets,the microhardness of Ti(C,N)-based cermets with WC or Mo2 C addition was investigated at high temperature.The results show that the high-temperature microhardness of Ti(C,N)-based cermets with WC and Mo2 C addition both decreased with the increase of temperature.At 600--800 ℃C,the hightemperature microhardness of cermets containing WC was slightly higher than that of cermets with Mo2C and microhardness was almost the same at 900 ℃.The indentation area and average indentation depth of two cermets both increased with increase of temperature.The true strain of cermets with WC was significantly less than that of cermets with Mo2C addition,but high-temperature deformations of two cermets were nearly close at 900 ℃.