期刊论文

Cheng Yin

中文

稀有金属材料与工程

1002-185X

2008

37

A01

107-110

10.3321/j.issn:1002-185X.2008.z1.027

本校为第一且通讯机构

采用熔融冷淬法制备了Bi2O3.B2O3(30 mol%≤Bi2O3≤60 mol%)二元系统玻璃.运用非等温DSC分析以及S(S)atava和Ozawa-Chen方法研究了Bi2O3-B2O3玻璃的非等温析晶特性,并计算了玻璃的析晶动力学参数.结果表明,在50 mol%≤Bi2O3≤60 mol%范围内,玻璃晶化热处理后可析出针状BiBO3晶体,是原位受控晶化法制备BiBO3晶体的最佳组成范围.添加La2O3和Sm2O3,有助于抑制高聚合度的铋硼酸盐晶体的析出,促进BiBO3晶体的形成;而添加Yb2O3的铋硼酸盐玻璃,晶化热处理后以颗粒状的Bi6810O24晶体为主,不利于BiBO3晶体的析出.对稀土掺杂铋硼酸盐玻璃样品在460～540℃间热处理5 h,可获得表面析晶的透明玻璃样品.

Bi2O3-B2O3 glass containing 30 similar to 60 mol% Bi2O3 were prepared by the melting-quenching method. The crystallization kinetics of Bi2O3-B2O3 glasses were studied by DSC, atava and Ozawa-Chen methods. The results showed that needle BiBO3 crystal could be formed by re-heated process in the range of 50 mol%