GE Shutian 1, XIAO Zhuohao 1, CHENG Ling 1, KONG Yong 1, LI Xiuying 1, DONG Hongbo 2, KONG Lingbing
(1. Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China; 2. Linyi University, Linyi 276005, Shandong, China)
Abstract: Micrystalline glass is a kind of polycrystalline composite material, with dense micrystalline phase and glass phase derived from specific basic glass through heat treatment. A large number of tiny crystals and glass phase endows micrystalline glass with excellent mechanical strength and other special properties, as compared with glasses. Among them, mica glass-ceramics not only have excellent properties common to ordinary glass-ceramics, but also have unique machinable characteristics, so that they have been widely used in biomedical, aerospace engineering, chemical and electronic devices and so on. The structure composition, classification and preparation technology of mica glass-ceramics are systematically introduced, while the machinability test methods of mica glass-ceramics are summarized and the strength improvement methods of mica glass-ceramics are described. Finally, the development trend of mica glass-ceramics is discussed.
Key words: machinable glass ceramics; mica glass ceramics; machinability; mechanical properties