金属陶瓷
碳化物
溶解
材料科学
芯(光纤)
扫描电子显微镜
冶金
结晶学
复合材料
化学工程
化学
陶瓷
工程类
作者
Min Chen,Xuefeng Zhang,Xuan Xiao,Haiquan Zhao
标识
DOI:10.1088/2053-1591/ac0d92
摘要
Abstract Herein, the effect of adding VC with different contents and Mo 2 C, WC and TaC on the core-rim structure evolution of TiC-based cermets was investigated using x-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy. Results show that the added secondary carbides exhibiting the same crystal stucture as TiC are prone to solid dissolution in TiC grains and change the core-rim stuctures of TiC-based cermets. With the addition of only VC, (Ti,V)C is the main component in the black core-grey rim structure and increasing the VC content is beneficial for promoting the dissolution process of cores. With the addition of multiple carbides, the core-rim structure in cermet Ta-7 is effectively improved, showing a high percentage of white core-grey rim structures, and the mechanical properties are improved.
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