P2O5-PbO-Bi2O3 系统玻璃和微晶玻璃的结构
来源期刊：中国有色金属学报1997年第1期
论文作者：卢安贤 黄继武 卢仁伟
文章页码：88 - 92
关键词：微晶玻璃 晶体 结构
Key words：glass glass-ceramics crystal structure
摘 要：通过传统熔体冷却方法制成了P2O5-PbO-Bi2O3 系统玻璃、微晶玻璃及晶体，利用X射线衍射谱、红外光谱和喇曼光谱考察了该系统中晶体、微晶玻璃及玻璃结构上的差异。结果表明，晶体中含不带 P=O 双键的[PO4] 四面体；微晶玻璃中含少量P=O 双键的 [PO4] 四面体及较多量不带 P=O 双键的 [PO4] 四面体；玻璃结构中P5+主要以带P=O 双键的 [PO4] 四面体形式存在，这些 [PO4] 四面体间共顶而形成链式结构， 链与链之间通过 Pb2+或 Bi3+离子联接而形成层状无定形玻璃结构。
Abstract: The glasses, glass-ceramics and crystals in the P2O5-PbO-Bi2O3 system have been prepared by conventional melt quenching technology. The structural differences of these three kinds of substances above-mentioned were examined by X-ray, IR and Raman spectra. The results show that the structure of the crystals contains the [PO4] tetrahedra without P=O bond, the structure of the glass-ceramics contains mainly the[PO4] tetrahedra without P=O bond and a few of the [PO4] tetrahedra with P=O bond, the structure of glasses in this system contains mainly the[PO4] tetrahedra with P=O bond; and the chain structures are formed by the connection of top angle oxygen between the[PO4] tetrahetra, and these chain structures are connected by Pb2+ or Bi3+ ions, which results in the forming of layer random network structure of these glasses.
