(1.中南工业大学材料科学与工程系，长沙 410083;
2. 中南工业大学粉末冶金研究所，长沙 410083)
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。
关键字: 微晶玻璃 晶体 结构
（1.Department of Materials Science and Engineering,
2.Central South University of Technology, Changsha 410083）
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.
Key words: glass glass-ceramics crystal structure
