高Bi_2O_3低B_2O_3含量的PbO－Bi_2O_3－B_2O_3系统研

STUDY OF PbO-Bi_2O_3-B_2O_3 SYSTEM CONTAINING HIGHER Bi_2O_3 AND LOWER B_2O_3

通过传统熔体冷却方法确定了高Ｂｉ２Ｏ３低Ｂ２Ｏ３含量的ＰｂＯ－Ｂｉ２Ｏ３－Ｂ２Ｏ３系统形成玻璃的最少Ｂ２Ｏ３引入量；利用Ｘ射线衍射分析和红外光谱分析方法研究了由Ｐｂ３Ｏ４，Ｂｉ２Ｏ３单一氧化物、高Ｂｉ２Ｏ３含量的ＰｂＯ－Ｂｉ２Ｏ３二元系统及高Ｂｉ２Ｏ３低Ｂ２Ｏ３含量的ＰｂＯ－Ｂｉ２Ｏ３－Ｂ２Ｏ３三元系统经熔融冷却而获得物质的结构特点，探讨了少量Ｂ２Ｏ３的引入对该三元系统形成玻璃的作用和形成无定形结构的可能机制。

The minimum of addition of B2O3 oxide for glass forming in the PbO-Bi2O3-B2O3 systemcontaining higher Bi2O3 was determined by conventional melt cooling route. X-ray diffractionand IR methods were used to study the structure features of these substances gained by melt-ing Bi2O3 or Pb3O4 single oxide,PbO-Bi2O3 binary system oxides and PbO-Bi2O3-B2O3 ternarysystem oxides.The effects of addition of B2O3 on the glass forming in the PbO-Bi2O3_B2O3system were discussed.The possible mechanism of forming amorphous structure for theternary system was presented.