A general strategy towards improving the strength and thermal shock resistance of glass-ceramics through microstructure regulation  

作　　者：Min Feng Chengyang Jiang Minghui Chen Shenglong Zhu Fuhui Wang 

机构地区：[1]Shenyang National Laboratory for Materials Science,Northeastern University,Shenyang 110819,China [2]Chinese Academy of Sciences,Institute of Metal Research,Shenyang 110016,China

出　　处：《Journal of Materials Science & Technology》2022年第25期139-149,共11页材料科学技术（英文版）

基　　金：financially supported by the Excellent Youth Foundation of Liaoning Province (No. 2019-YQ-03);the National atural Science Foundation of China (No. 51871051);the Ministry of Industry and Information Technology Project (No. MJ2017-J-99);the Chinese Postdoctoral Science Foundation (No. 2021M690561)。

摘　　要：Glass-ceramics are usually obtained through controlled crystallization.In this work,we propose a new strategy to add an appropriate amount of oxide particles to the parent glass to improve the performance of glass-ceramics.Different amounts of Al_(2)O_(3) or/and CeO_(2) particles were added into a SiO_(2)-Al_(2)O_(3)-ZnOCaO-ZrO_(2)-TiO_(2)based glass,and crystallization behavior,fracture strength,and thermal shock behavior were systematically evaluated.The results indicate that with the addition of Al_(2)O_(3) or/and CeO_(2) particles of moderate amount,the unfavorable needle-like ZrSiO_(4),Zn 2 SiO_(4),and CaTiSiO_(5) crystals were largely inhibited when annealed at 900℃ .Accordingly,fracture strength is maintained high after heating at high temperatures.The thermal shock resistance is also enhanced drastically.The additive Al_(2)O_(3) is thermodynamically favorable to react with the glass,forming particulate ZnAl_(2)O_(4) instead of precipitating the needle-like crystals of Zn_(2)SiO_(4) and CaTiSiO_(5);while CeO_(2) will combine with ZrO_(2) to form a solid solution and promote the precipitation of primary crystal CaZrTi_(2)O_(7) that will not transform to ZrSiO_(4) with prolonging thermal exposure.

关 键 词：Non-metallic glasses(silicates) CRYSTALLIZATION Microstructure Mechanical property High-temperature oxidation 

分 类 号：TQ171.733[化学工程—玻璃工业]