(1.中南工業(yè)大學材料科學與工程系，長沙 410083;
2. 中南工業(yè)大學粉末冶金研究所，長沙 410083)
摘 要: 通過傳統(tǒng)熔體冷卻方法制成了P2O5-PbO-Bi2O3 系統(tǒng)玻璃、微晶玻璃及晶體，利用X射線衍射譜、紅外光譜和喇曼光譜考察了該系統(tǒng)中晶體、微晶玻璃及玻璃結構上的差異。結果表明，晶體中含不帶 P=O 雙鍵的[PO4] 四面體；微晶玻璃中含少量P=O 雙鍵的 [PO4] 四面體及較多量不帶 P=O 雙鍵的 [PO4] 四面體；玻璃結構中P5+主要以帶P=O 雙鍵的 [PO4] 四面體形式存在，這些 [PO4] 四面體間共頂而形成鏈式結構， 鏈與鏈之間通過 Pb2+或 Bi3+離子聯(lián)接而形成層狀無定形玻璃結構。
關鍵字: 微晶玻璃 晶體 結構
（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
