Li_2O-Al_2O_3-SiO_2 系统微晶玻璃的热导研究  

Study on Thermal Conductivity of Li_2O-Al_2O_3-SiO_2 Glass-Ceramics

作　　者：冯翠英[1] 郑洪[2] 赵明洲[2] 

机构地区：[1]同济大学测试中心 [2]同济大学玻尔固体物理研究室

出　　处：《无机材料学报》1991年第1期16-20,共5页Journal of Inorganic Materials

摘　　要：用差热分析方法测量了 Li_2O-Al_2O_3-SiO_2系统微晶玻璃的比热,并用激光热导仪测得其导温系数,进而得到微晶玻璃导热系数和结晶度的关系,分析了微晶玻璃中声子平均自由程(PMFP)随结晶度增加的变化规律。The specific heat of Li_2O-Al_2O_3-SiO_2 glass ceramics was measured by DTA,andits thermal diffusivity by laser-flash diffusivity technique,from which the relation-ship between thermal conductivity coefficient and crystallinity was obtained.Furthe-rmore,the regularity in the variation of phonon mean free path with increase incrystallinity was obtained by calculation.

关 键 词：微晶玻璃 热导性 结晶度 锂 铝 硅 

分 类 号：TQ171.733[化学工程—玻璃工业]