P₂O₅－PbO－Bi₂O₃系统两种不同类型玻璃的结构差异

来源期刊：中南大学学报(自然科学版)1996年第6期

论文作者：黄继武 卢安贤

文章页码：707 - 710

关键词：玻璃; 结构; 熔体冷却方法

Key words：glass; structure; melt quenching technology

摘    要：通过传统熔体冷却方法考察了P₂O₅－PbO－Bi₂O₃系统的玻璃形成,利用X射线衍射分析、红外光谱和拉曼光谱考察了该系统两种不同类型玻璃的结构差异.结果表明,P₂O₅－PbO－Bi₂O₃系统存在两个玻璃形成区;在低P₂O₅区(<46%,摩尔分数)形成的玻璃中,存在不含P＝O双键且A₁(σ₁)被激活的[PO₄]四面体;在高P₂O₅区(>50%,摩尔分数)形成的玻璃中存在聚磷酸盐型[PO₄]阴离子团,这些阴离子团通过Pb^2＋,Bi^3＋联接而形成层状玻璃结构.

Abstract: The formation of glasses in the P₂O₅-PbO- Bi₂O₃ system was examined by conventional melt quenching technology, X-ray, IR and Raman spectra were used to investigate the structural differences of two different kinds of glasses in this ternary system. The results show that, there are two glass forming regions in the P₂O₅-PbO- Bi₂O₃ system; the structure of the glasses with lower P₂O₅ contents (<46% ) contains the [PO₄] tetrahedra without P =O bands and with the P-O bands where A₁ (σ₁) was excited; the structure of the glasses with higher P₂O₅ contents (>50% ) contains polyphosphate [PO₄] ion groups. These ion groups are connected by Pb²⁺ or Bi³⁺ ions, resulting in the formation of the layer random structure of the glasses with higher P₂O₅ contents in the P₂O₅-PbO- Bi₂O₃ system.