石材废粉制备具有自增韧结构莫来石陶瓷  

Use of Granite Sawing Wastes to Synthesize Mullite Ceramics with Self-toughing Microstructure

作　　者：陈燕春[1] 詹琴梅[1] 刘国璋[1] 刘柯江[1] 陈晓虎[1] 

机构地区：[1]华侨大学材料科学与工程学院,厦门361021

出　　处：《中国陶瓷》2013年第9期10-12,共3页China Ceramics

基　　金：2012年华侨大学国家级大学生创新创业训练计划项目(012-6)

摘　　要：以福建南安花岗岩石材废粉和工业氧化铝为原料,通过机械激活和高温烧结制备了具有自增韧结构的莫来石陶瓷材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)分析了不同配比烧结体的成分与显微结构。结果表明,石粉所含长石可为棒状莫来石晶粒的生长提供较为适宜的液相环境,莫来石的形成可由溶解-析出机制较好地解释。Mullite ceramics with self-toughing microstructure were synthesized via mechanical activation and high temperature calcination using granite sawing wastes and industrial alumina as raw materials. The phase evolution and microstructure of sintered body with different ratio were analysized using XRD and SEM, separately. The experimental results show that feldspar in granite sawing wastes could provide more suitable liquid environment for rod-like mullite grain growth and mullite phase formation could be explained using a dissolution- precipitation mechanism.

关 键 词：莫来石 自增韧结构 石材废粉 溶解-析出机制 

分 类 号：TQ174.75[化学工程—陶瓷工业]