热处理对CaO-Al_2O_3-SiO_2系烧结微晶玻璃吸水率的影响  

Effect of heat treatment onwater absorbance of CaO Al_2O_3 SiO_2 sintered glass ceramics

作　　者：陈禾[1] 梁开明[1] 李力军[1] 段仁官[1] 左玉华 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《清华大学学报（自然科学版）》1999年第10期18-20,共3页Journal of Tsinghua University(Science and Technology)

摘　　要：　为降低微晶玻璃的吸水率，通过测定不同颗粒尺寸玻璃在烧结过程中吸水率的变化和扫描电镜的观察，研究了热处理对ＣａＯ－Ａｌ２ Ｏ３ －ＳｉＯ２ 系烧结微晶玻璃吸水率的影响。实验结果表明，在较低温度（９００ ℃）烧结，微晶玻璃具有较高的吸水率，随温度升高吸水率急剧下降，但高温区（１ ０５０～１ １００ ℃）较长时间停留吸水率又有所回升，玻璃原始颗粒尺寸对高温烧结时微晶玻璃制品吸水率的影响作用较小。By means of measuring the changes of the water absorbance of glass particles in sintering with different starting size and the observation by scanning electron microscopy, the effect of heat treatment on the water absorbance of CaO Al 2O 3 SiO 2 sintered glass ceramics was studied in order to decrease the water absorbance of glass ceramics. Results show that the glass ceramics has higher water absorbance while sintering at lower temperature (900℃). The water absorbance decreases greatly as temperature goes up. However, it increases slightly during longer stay at higher temperature (1050～ 1100℃ ). The starting particle size of the glass has minor effect on the water absorbance of glass ceramics sintering at higher temperature.

关 键 词：微晶玻璃 烧结 吸水率 热处理 

分 类 号：TQ171.733[化学工程—玻璃工业]