CaO-MgO-Al_2O_3-SiO_2-F系可切削玻璃陶瓷的显微结构和性能  

Properties and Microstructure of Machinable Glass-Ceramic in CaO-MgO- Al_2O_3-SiO_2-F System

作　　者：李红[1] 黄浪欢[1] 冉均国[2] 苟立[2] 

机构地区：[1]暨南大学化学系,广东广州510632 [2]四川大学无机材料系,四川成都610065

出　　处：《玻璃与搪瓷》2005年第2期10-13,23,共5页Glass & Enamel

摘　　要：在CaO-MgO-Al_2O_3 -SiO_2 -F系新型钙云母可切削玻璃陶瓷体系中,研究分析了不同显微结构对性能的影响。板条形、长径比大的晶粒相互交错地分布,通过裂纹偏转增韧,通过穿晶断裂的方式增强。同时,这种显微结构也赋予材料良好的加工性。球晶则不利于材料的加工,含球晶的玻璃陶瓷力学性能也较差。In CaO-MgO-Al_2O_3-SiO_2-F system, the effect of microstructure of the new-type fluorophlogopite-Ca machinable glass-ceramic on its properties was investigated. The material with large aspect ratio, rod-like and interlocking crystals was toughened by crack deflection and tore-out, and was reinforced by transgranular fracture. It also was endowed with excellent machinablity. The material with spherulite showed poor strength and fracture toughness, and bad machinability.

关 键 词：可切削玻璃陶瓷 显微结构 性能 

分 类 号：TQ171.733[化学工程—玻璃工业]