Bi_2O_3对Al_2O_3-ZnO-Bi_2O_3-B_2O_3低熔玻璃结构和性能的影响  

Effects of Bi_2O_3 on structure and properties of Al_2O_3-ZnO-Bi_2O_3-B_2O_3 low-melting glasses

作　　者：于小军[1] 朱丽慧[1] 黄清伟 刘庆峰 朱铄金[1] 

机构地区：[1]上海大学材料工程系,上海200072 [2]南阳森霸光电有限公司上海分公司,上海201314

出　　处：《电子元件与材料》2013年第9期12-14,18,共4页Electronic Components And Materials

摘　　要：采用传统的熔淬技术制得了低熔Al2O3-ZnO-Bi2O3-B2O3玻璃,研究了玻璃结构、玻璃特征温度、线膨胀系数(αl)以及密度随Bi2O3含量的变化关系。结果表明:随着Bi2O3含量的增加,玻璃网络中[BO4]取代了部分[BO3],玻璃网络中出现Bi—O结构,玻璃中非桥氧的数量也逐渐增多;软化温度(ts)、玻璃化温度(tg)都是先上升后下降,而线膨胀系数先减小后逐渐增大,玻璃密度先是线性增加,然后增加趋势变大。The Al2O3-ZnO-Bi2O3-B2O3 low-melting glasses were prepared using conventional melt quenching technique. The effects of Bi2O3 content on structure, characteristic temperature, coefficient of linear expansion at and density of the prepared glasses were studied. The results show that with the increase of Bi2O3 content, some [BOa] replace part of [BO3] units, the Bi---O structure appears in the glass network and the number of non-bridging oxygen atoms increases . As the content of Bi2O3 increases, the characteristic temperatures （softening temperature ts and transition temperature tg ） increase at first and then decrease, while at decreases first and then increases. The glass density increases linearly at first and then the tendency rises with the increase of Bi2O3 content.

关 键 词：无铅低熔玻璃 Al2O3-ZnO-Bi2O3-B2O3 结构 特征温度 线膨胀系数 密度 

分 类 号：TB303[一般工业技术—材料科学与工程]