B_2O_3对Bi_2O_3-ZnO-B_2O_3系低熔封接玻璃光谱特性及结构、低熔性能影响研究  

Effect of B_2O_3 on Spectra Properties,Low Melting Properties and Structure of Bi_2O_3-ZnO-B_2O_3 Glass System

作　　者：常明[1] 左岩[1] 李要辉[1] 王晋珍[1] 黄幼榕[1] 

机构地区：[1]中国建筑材料科学研究总院,北京100024

出　　处：《材料保护》2013年第S2期182-185,共4页Materials Protection

摘　　要：以低熔点无铅Bi2O3-ZnO-B2O3封接玻璃为研究对象,在固定B2O3/ZnO摩尔比例为1:1的条件下,研究B2O3含量变化对玻璃的成玻性能、光谱特性、低熔性能的影响。结果表明,Bi2O3-ZnO-B2O3体系玻璃种存在[BO3]、[BO4]、[BiO3]、[BiO6]结构单元,随着B2O3含量的增加,[BO3]、[BO4]含量都增加,[BiO3]、[BiO6]含量降低,但是由于硼酸盐玻璃中存在"硼反常"现象,[BO4]含量增加到一定程度就开始降低。并且随着B2O3含量的增加,玻璃体系的无序度增加,在红外和拉曼光谱图中体现在红外吸收带和拉曼光谱谱带变宽。当B2O3摩尔含量为20%时,低熔封接玻璃结构稳定,玻璃化温度t g和析晶温度t c匹配合适,具有较佳的烧结及封接特性。Lead-free low-melting sealing glass of Bi2O3-ZnO-B2O3 was studied in this article。Under the condition that molar ratio of B2 O3 and ZnO was fixed to1:1,we studied the effect of different B2 O3 content on the properties of glass performance,spectrum absorption and low melting. The results show that,four units such as [BO3 ]、[BO4 ]、[BiO3 ]、[BiO6 ]exsited in the glass system. Along with the increase of B2 O3 content,units of [BO3 ]、[BO4 ]increased and units of[BiO3 ]、[BiO6 ]decreased. But content of[BO4 ]decreased as B2 O3 content increased to some extent because of the phenomenon of'boron anomaly'. Degree of disorder of the glass system increased and the spetral band of infrared spectra and raman spectra broadened along with the increase of B2 O3 content. When the molar ratio of B2 O3 was20 percent,structure stability and glass transition temperature( t g) and crystallization temperature match well with fine sealing properties.

关 键 词：Bi2O3-ZnO-B2O3 封接玻璃 光谱特性 低熔性能 

分 类 号：TQ171.1[化学工程—玻璃工业]