【作者】 崔介东； 马立云； 王芸； 曹欣；

【机构】 蚌埠玻璃工业设计研究院,浮法玻璃新技术国家重点实验室；

【摘要】 固定铝硅酸盐玻璃中碱金属氧化物与碱土金属氧化物的质量百分比不变,研究了不同铝硅比（Al₂O₃与SiO₂含量比）对玻璃的热学性能的影响,包括热膨胀系数、玻璃的应变点、转变点、退火点、膨胀软化温度等低温特征黏度,以及高温黏度特征,结果表明:玻璃的低温特征黏度参考点随铝硅比的增加而增大,且当Al₂O₃质量百分比大于10wt.%时,玻璃对应于黏度为10Pa.s的熔化温度在1750℃以上;而热膨胀系数变化幅度不大,均在79～83’10^-7/℃之间。更多还原

【Abstract】 The effects of substitution of Al₂O₃ for SiO₂ by fixing weight percent of alkaline-earth oxides and alkaline oxides in alumina silicate glasses on the thermal characteristics,including coefficient of thermal expansion（CTE ） and temperature characteristic viscosity reference points such as the strain point,glass transformation temperature,annealing point and dilatometric softening point,as well as high temperature characteristic viscosity reference points were studied.The result s show that the low temperature characteristic viscosity reference points increases with increasing the ratio of wt.%（Al₂O₃） / wt.%（SiO₂）.And the melting point of glasses referring to the viscosity equaling 10Pa.s is larger than 1750℃.CTE of all glasses shows a small change in the range of 79～83’10-7/℃.更多还原