菱镁矿粒度对堇青石陶瓷烧结性能的影响  

Influence of Particle Size of Magnesite on the Sintering Properties of Cordierite Ceramics

作　　者：王体珏 张锦化[1] 杨伟峰 黄蒋磊 胡俊[1] 王天怡 WANG Ti-Jue;ZHANG Jin-Hua;YANG Wei-Feng;HUANG Jiang-Lei;HU Jun;WANG Tian-Yi(The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,武汉430081

出　　处：《现代技术陶瓷》2017年第6期440-446,共7页Advanced Ceramics

基　　金：湖北省自然科学基金(2014CFB89)

摘　　要：以菱镁矿、高岭土和石英为主要原料,采用固相反应法制备了堇青石陶瓷。采用TG-DSC、XRD、SEM能谱分析等方法,研究了菱镁矿粒度对堇青石陶瓷烧结性能的影响以及堇青石合成过程的反应机理。结果表明,降低菱镁矿的粒度可以有效降低堇青石陶瓷的烧成温度;在该体系中,堇青石陶瓷的烧成受固相扩散传质控制,降低原料粒度可以促进堇青石陶瓷的烧成。The cordierite ceramics were prepared by solid-state reaction with magnesite,kaolin and quartz as raw materials.Influence of particle size of magnesite on the sintering properties of cordierite ceramics and reaction mechanism of cordierite synthesis process were studied by means of TG-DSC,XRD,SEM and EDX.It turned out that reducing the particle size of magnesite could reduce the sintering temperature of cordierite ceramics effectively.The sintering of cordierite ceramics was controlled by solid-state diffusion in this system.Reducing the particle size of raw materials could promote the sintering process of cordierite ceramics.

关 键 词：堇青石 粒度 烧结 反应机理 

分 类 号：TB32[一般工业技术—材料科学与工程]