摘要
在Bi2O3-BaO-SiO2(BiBaSi)玻璃体系中,分别加入10%(质量分数,下同)、20%和30%MgO骨料制备用作封接材料的复合玻璃。用差热分析仪、扫描电镜和场发射扫描电镜对复合玻璃的热膨胀系数、物相和元素组成进行了分析。结果表明:MgO的加入在一定范围内调整了封接材料的热膨胀性能,提高了复合封料的使用温度;BiBaSi-10MgO在760℃长期使用呈现玻璃相与MgSiO3晶体相长期共存,而BiBaSi-20MgO和BiBaSi-30MgO分别在840℃和900℃长期使用呈现玻璃相与Mg2SiO4晶体相长期共存;通过MgO含量和温度的协同作用,调控了复合封料的结晶速率,获得良好的长期稳定性。
The composite sealants with a magnesium oxide-filler of 10%（mass fraction,the same below）,20% and 30% in the Bi2O3-BaO-SiO2（BiBaSi）glass were investigated.The coefficients of thermal expansion（CTE）,phase and elements of the composite sealants were analyzed by differential thermal analysis,scanning electron microscope and field emission scanning electron micros-copy.The results show that the CTE of sealants can be adjusted and the suitable sealing temperature can be increased via the addition of the magnesium oxide-filler.There co-existed glass phase and magnesium silicate crystal phase in BiBaSi-10MgO at 760 ℃,and there co-existed glass phase and forsterite crystal phase in BiBaSi-20MgO and BiBaSi-30MgO at 840 ℃ and 900 ℃,respectively.The crystallization rate of composite sealants could be controlled by the synergies of magnesium oxide content and temperature,leading to the improvement of the stability of sealing materials.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2011年第7期1102-1107,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金项目(50872150,50730004)
科技部国际合作项目(2009DFA6136)资助
作者简介
韩敏芳（1967-），女，博士，教授。
