Na_2O-B_2O_3-Ta_2O_5系统玻璃红外光谱的研究

A Study of IR Spectra of Na_2O-B_2O_3-Ta_2O_5System Glass

本文首次系统地研究了Na_2O—B_2O_3—Ta_2O_5。三元新系统的红外光谱,分析了B_2O_3、Ta_2O_5含量的变化对玻璃结构的影响。结果表明:随着Na_2O/B_2O_3比值的减小,结构中:[BO_4]四面体减小,[BO_3]三角体增加。随着Ta_2O_5含量的增加,[BO_4]四面体的数量增多,非桥氧的数量减少,表明Ta^(5+)可以连结非桥氧,形成网络。

IR spectra of the Na_2O-B_2O_3-Ta_2O_5 system glass are studied. The gl as structures changing with the B_2O_3 and Ta_2O_5 contents are analyzed. The experiments indicate that with the decreasing of the proportion value (Na_2O/B_2O_3) the groups of[BO_4] and [BO_3] in the glass structure decrease and increase respectively. When the Ta_2O_5 contents arise[B0_4]will increase and the non-bridge oxygen decreases. This shows that the Ta^(6+)can link with non-bridge oxygen and form glass networks.