超低膨胀系数堇青石蜂窝陶瓷材料的制备  

Preparation of Ultra-Low Thermal Expansion Cordierite Ceramic Honeycomb Material

作　　者：罗凌虹[1] 余永志[1] 王乐莹[1] 程亮[1] 石纪军[1] 

机构地区：[1]景德镇陶瓷学院,江西景德镇333001

出　　处：《陶瓷学报》2013年第2期181-185,共5页Journal of Ceramics

基　　金：江西省重大科技创新研究项目"千瓦级中温平板型固体氧化物燃料电池系统研究"(编号:20114ACE00300);江西省科技支撑计划项目"新型结构高性能中温固体氧化物燃料电池的研究"(编号:20111BBE50017)

摘　　要：利用XRD、SEM等测试技术对NGK和宜兴某厂的堇青石蜂窝陶瓷样品进行对比分析和研究,结果得出:由于NGK堇青石陶瓷在微观结构方面产生微裂纹导致NGK(0.2×10-6/℃)生产的堇青石蜂窝陶瓷热膨胀系数(1.2×10-6/℃)比宜兴产的小。由此提出了超低膨胀系数堇青石陶瓷的制备方案,即从浆料分散及烧成制度两个方面对宜兴蜂窝陶瓷微观结构进行优化从而有效降低其膨胀系数。In this paper, the samples of cordierite honeycomb ceramic from NGK and a factory in Yixing were analyzed and studied comparatively by using the XRD and SEM. The result is that the thermal expansion coefficient of cordierite honeycomb ceramic from NGK （0.2x10-6/℃） is smaller than Yixing （1.2x10-6/℃）, for cordierite ceramic from NGK created microcrack in microstructure. Then, the process for preparing ultra-low expansion cordierite ceramic was proposed： the microstructure was optimized through both the slurry dispersion and firing system in order to effectively reduce the coefficient of thermal expansion.

关 键 词：堇青石 蜂窝陶瓷 超低热膨胀系数 微观结构 

分 类 号：TQ174.75[化学工程—陶瓷工业]