Effect of CaO content on residual stress of CAS glass-ceramic  

作　　者：XIE Jun CHENG Jin-shu LONG Xin-jiang YANG Shu-zhen 

机构地区：[1]Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

出　　处：《中国有色金属学会会刊：英文版》2006年第B01期101-104,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project(50272043) supported by the National Natural Science Foundation of China

摘　　要：The mismatch in thermal expansion coefficient between crystalline phase and glass phase can result in large thermal stresses during thermal processing, as well as the low thermal conductivity, which is the most troublesome in the production of the CaO-Al2O3-SiO2 glass-ceramic. CaO content may influence the residual stress in the system. Therefore X-ray diffraction (XRD) ‘sin2ψ’ method was used to calculate the residual stress in samples containing various contents of CaO. The relationship between CaO content and residual stress in CAS system was investigated. Finally reasons causing such residual stress were analyzed.The mismatch in thermal expansion coefficient between crystalline phase and glass phase can result in large thermal stresses during thermal processing, as well as the low thermal conductivity, which is the most troublesome in the production of the CaO-Al2O3-SiO2 glass-ceramic. CaO content may influence the residual stress in the system. Therefore X-ray diffraction （XRD） ＇sin^2ψ＇ method was used to calculate the residual stress in samples containing various contents of CaO. The relationship between CaO content and residual stress in CAS system was investigated. Finally reasons causing such residual stress were analyzed.

关 键 词：CAS玻璃陶瓷 氧化钙含量 残余应力 晶相 玻璃相 

分 类 号：TQ174.66[化学工程—陶瓷工业] TQ174.758.11[化学工程—硅酸盐工业]