堇青石-莫来石立柱成分分析与断裂机理研究  

The Chemical Composition Analysis of Cordierite-mullite Columns and Study on Its Fracture Mechanism

作　　者：娄有信[1] 李浩宇 杨子 王金宝 王旭平 Lou Youxin;Li Haoyu;Yang Zi;Wang Jinbao;Wang Xuping(School of Materials Science and Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan,250353,China;The key laboratory of Green Building Materials,Henan Academy of Sciences,Zhengzhou,450002,China;Hongda Ceramics Co.,Ltd,Zibo,255129,China;Advanced Materials Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan,250014,China)

机构地区：[1]材料科学与工程学院,齐鲁工业大学(山东省科学院),山东济南250353 [2]河南省科学院绿色建材重点实验室,河南科学院,河南郑州450002 [3]淄博宏大陶瓷有限公司,山东淄博255129 [4]新材料研究所,齐鲁工业大学(山东省科学院),山东济南250014

出　　处：《陶瓷研究》2022年第1期73-75,共3页Ceramic Studies

基　　金：河南省自然科学基金(ZR2016EMQ09);山东省科学院青年合作基金(2018QNHZ01)。

摘　　要：堇青石-莫来石立柱是一种常用的陶瓷厂窑具材料,在高温烟气腐蚀下,堇青石-莫来石立柱通常发生断裂失效。本工作以陶瓷厂断裂失效堇青石-莫来石立柱为研究对象,采用X射线衍射、X射线荧光、扫描电子显微镜等技术测定分析了堇青石-莫来石立柱的化学组成与微观结构。结果发现:断裂失效后的堇青石-莫来石立柱组织中形成了大量玻璃相结构,伴有大量二氧化硅流失,出现了大量裂纹、孔隙,导致堇青石-莫来石立柱抗折强度下降,引发堇青石-莫来石立柱断裂失效。Cordierite-mullite columns are used widely as one kind of kiln furniture materials in porcelain factories.The fracture failure of cordierite-mullite column happens commonly due to the long-term corrosion of high temperature flue gas.This work is to study the failed cordierite-mullite columns.The chemical composition and micro-structure of failed cordieritemullite columns were characterized by XRD,X-ray fluorescence and scanning electron microscope.The reults show that there is plenty of glassy phase formed and some loss of silica composition in failed cordierite-mullite.And some cracks and porosity in failed columns decrease the flexural strength of the cordierite-mullite columns,which is the origination of the fracture failure of cordierite mullite column.

关 键 词：堇青石 化学组分 莫来石 X射线荧光 X射线衍射 

分 类 号：TB35[一般工业技术—材料科学与工程]