SnO-CaO-P_2O_5体系无铅封接玻璃的形成与性能优化研究  

Investigation of Glass-forming Region and Performance Optimization in Lead-free SnO-CaO-P_2O_5 System

作　　者：赵德森[1] 洪建和[1] 高金飞[2] 何明中[1] 何岗[1] 

机构地区：[1]中国地质大学(武汉)材料科学与化学工程学院,武汉430074 [2]华新水泥股份有限公司,武汉430074

出　　处：《无机材料学报》2010年第10期1053-1057,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(50821140308;50972135);材料复合新技术国家重点实验室(武汉理工大学)开放基金(2010-KF-6)~~

摘　　要：采用熔体冷却的方法制备了SnO-CaO-P2O5三元体系无铅玻璃.采用X射线衍射仪、热膨胀仪、绝缘电阻测试仪和粉末失重法研究了该体系玻璃的玻璃形成区、热膨胀系数、体积电阻率及化学稳定性.结果表明,样品体积电阻率随P2O5含量的增加先增大后减小,在P2O5=50mol%附近出现极大值,随SnO含量的增加逐渐减小.对10SnO-40CaO-50P2O5-xSiO2系列试样的研究表明,随着SiO2含量的增加,样品热膨胀系数由9.8×10-6/℃逐渐减小至7.6×10-6/℃,体积电阻率逐渐增大,在酸性和中性溶液中失重率逐渐减小,在碱性溶液中失重率则逐渐增大.Lead-free glass in SnO-CaO-P2O5 ternary system were fabricated by melt quenching method.The glass-forming region,coefficient of thermal expansion（CTE）,volume resistivity as well as chemical durability of the glass were investigated by the methods of X-ray diffractometer,thermal expansion instrument,insulation resistance instrument,and grain mass loss method.The results show that the glass-forming region is larger than that of SnO-ZnO-P2O5 ternary system.The minimum content of P2O5 to form glass phase should be 25mol%,while it increases rapidly to about 40mol% with the increase of CaO amount.Softening temperature（about 445 ℃） and CTE（9.0×10-6-10.0×10-6/℃） of the glass are equivalent with those of Pb-based sealing glass.The volume resistivity presents a maximum at about 50mol% P2O5 content with the increase of P2O5 amount,while it decreases with the increase of SnO amount.Research on the samples of 10SnO-40CaO-50P2O5-xSiO2 system show that with the increase of SiO2 amount,the CTE decreases from 9.8×10？6/℃ to 7.6×10？6/℃ and the volume resistivity increases gradually,while the mass loss decreases gradually in acid and neutral condition and increases in basic condition.

关 键 词：SnO-CaO-P2O5玻璃 玻璃形成区 掺杂改性 无铅封接玻璃 

分 类 号：TQ171[化学工程—玻璃工业]