文献类型：期刊文献

英文题名：Fabrication and properties of novel low-melting glasses in the ternary system ZnO-Sb₂O₃-P₂O₅

作者：Zhang, Bing[1];Chen, Qi[1];Song, Li[1];Li, Huiping[1];Hou, Fengzhen[1];Zhang, Jinchao[1]

机构：[1]E China Univ Sci & Technol, Dept Inorgan Mat, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2008

卷号：354

期号：18

起止页码：1948

外文期刊名：JOURNAL OF NON-CRYSTALLINE SOLIDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000255504300002)】；

语种：英文

外文关键词：chemical durability; X-ray diffraction; phosphates; glass transition

摘要：Glasses in the ternary system ZnO-Sb2O3-P2O5 were investigated as potential alternatives to lead based glasses for low temperature applications. The glass-forming region of ZnO-Sb2O3-P2O5 system has been determined. Structure and properties of the glasses with the composition (60-x)ZnO-xSb(2)O(3)-40P(2)O(5) were characterized by infrared spectra (IR), differential thermal analysis (DTA) and X-ray diffraction (XRD). The results of IR indicated the role of Sb3+ as participant in glass network structure, which was supported by the monotonic and remarkable increase of density (rho) and molar volume (V-M) with increasing Sb2O3 content. Glass transition temperature (T-g) and thermal stability decreased, and coefficient of thermal expansion (alpha) increased with the substitution of Sb2O3 for ZnO in the range of 0-50 mol%. XRD pattern of the heat treated glass containing 30 mol% Sb2O3 indicated that the structure of antimony-phosphate becomes dominant. The improved water durability of these glasses is consistent with the replacement of easily hydrated phosphate chains by corrosion resistant P-O-Sb bonds. The glasses containing >= 30 mol% Sb2O3 Possess lower T-g (< 400 degrees C) and better water durability, which could be alternatives to lead based glasses for practical applications with further composition improvement. (c) 2007 Elsevier B.V. All rights reserved.