The structure and properties of zinc aluminophosphate glasses

被引:60
作者
Smith, Charmayne E. [1 ]
Brow, Richard K. [1 ]
Montagne, Lionel [2 ]
Revel, Bertrand [2 ]
机构
[1] Missouri Univ Sci & Technol, Rolla, MO 65409 USA
[2] Univ Lille 1, Unite Catalyse & Chim Solide, UMR CNRS 8181, F-59655 Villeneuve Dascq, France
基金
美国国家科学基金会;
关键词
Aluminophosphate glasses; Nuclear magnetic resonance; Zinc phosphate glasses; Structure; Properties; INTERMEDIATE RANGE ORDER; PHOSPHATE;
D O I
10.1016/j.jnoncrysol.2013.11.042
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The glass forming region of the ZnO-Al2O3-P2O5 (ZAP) system was determined and the structures and properties of the glasses were characterized. For glasses with a constant O/P ratio, i.e., with similar average phosphate anion distributions, and with increasing alumina content, there is an increase in molar volume and glass transition temperature and a decrease in density and refractive index. The structures of the ZAP glasses were charaderized by Raman spectroscopy, P-31 and (27)AI magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy, and high pressure liquid chromatography (HPLC). Systematically shorter phosphate anions constitute the structures of glasses with greater O/P ratios. The average aluminum coordination number (CNAI) changes systematically with composition, from -4.0 to -5.6, depending on the number of terminal oxygens available to coordinate each Al-cation. Glass properties are sensitive to both the types and concentrations of the P-anions as well as the CNAI. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:105 / 114
页数:10
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