摘要
做了Li_2O—P_2O_5—MnO_2系统玻璃的形成实验,结果表明该系统玻璃有很大的形成范围.P_2O_5含量为25mo1%仍可形成玻璃.用Raman光谱,红外光谱和可见光谱分析了该系统玻璃的结构,锰的价态和配位数.研究了该系统玻璃在可见区内光吸收与组成之间的关系.讨论了该系统中玻璃中锰的价态、配位数与着色.Mn^(2+)离子使玻璃着浅黄色,以六配位八面体存在,Mn^(3+)使玻璃着紫、蓝紫或褐色,主要是六配位.但是,随着Li_2O含量增加,锰氧键将具有更多的共价键成分.
The glass formation was experimented on glasses in Li_2O-P_2O_3-MnO_2 system which was found to have a broad glass-forming range. Glasses can be formed when containing 25 mol%P_2O_5.
Raman. IR and Visible spectra were used to study the glass structure, valence and coordination number of manganese. The relation between glass composition and visible light trasmission was studied.
Valence and co-ordination number of manganese and colour were also discussed. The manganese (I) is pale yellow and is in six-fodl octahedron co-ordination. The manganese (I) is purple, bluish-pink or brown and is predominantly in six-fold co-ordination. The manganese-oxygen bonds become more covalent with increasing Ti_2O content in the glass.
出处
《玻璃》
1990年第5期1-8,共8页
Glass
