摘要
研究了组成调整对高硼硅玻璃粘度和膨胀系数的影响。结果表明,随着n(B2O3)/n(SiO2)比增大,玻璃粘度减小,而膨胀系数增大。增加Al2O3含量,玻璃粘度增大,但膨胀系数基本没有变化。Li2O具有助熔作用,可显著降低玻璃粘度,而增大膨胀系数。ZnO也表现出助熔效果,但比Li2O作用弱。CaO取代Na2O时,玻璃高温粘度变化较小,而低温粘度明显增大。加入ZnO和CaO,玻璃膨胀系数降低。外加少量的TiO2、ZrO2和La2O3可降低玻璃粘度,膨胀系数稍有增大。E玻璃与Kovar合金的膨胀系数具有优异匹配性,可满足Kovar合金封装要求,表现出良好的应用前景。
The effect of components on viscosities and coefficients of thermal expansion of borosilicate glasses were studied. With the increasing of n（B2O3）/n （SiO2） ratio, the viscosities of borosilicate glasses decrease, and their coefficients of thermal expansion increase. When Ale O3 replaces SiO2, the viscosities of borosilicate glasses enhance, but their coefficients of thermal expansion have little change. The viscosities rapidly decrease and coefficients of thermal expansion increase if Li2 O was adopted. ZnO carl also improve the melting of borosil- ieate glasses, hut its influence is less than Li2O＇s. When CaO replaces Na2O, the viscosity change of high ten〉 perature is little, but that of low temperature is much. The coefficients of thermal expansion decrease when ZnO and CaO were adopted. If a few TiO2, ZrO2 and La2O3 were introduced, the viscosities of borosilicate glasses decrease and their coefficients of thermal expansion have little increase. The coefficient of thermal expansion of E glass was matched excellently with that of Kovar alloy, indicating that E glass has a great potential application.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第21期2985-2988,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(60808024)
关键词
高硼硅玻璃
组成
粘度
膨胀系数
封接
borosilicate glass
component
viscosity
coefficient of thermal expansion
sealing
