机械合金化3Ti/Si/2C粉体,会诱发自蔓延反应,产生组成相为TiC、Ti3SiC2、TiSi2和Ti5Si3的粉体与块体产物.获得的粉体和块体产物中Ti3SiC2含量分别约为17.6%和58.2%(质量分数,下同).本研究提出了一个机械诱发自蔓延反应合成Ti3SiC2的反应机制,即Ti3SiC2是从固相TiC与Ti-Si液相中形核并长大.最后讨论了机械诱发自蔓延反应与自蔓延高温烧结对合成产物中Ti3SiC2含量及显微形貌的影响.
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