Intermediate-range order in simple metal-phosphate glasses: The effect of metal cations on the phosphate-anion distribution

被引：22

作者：

Sales, BC ^{[1
]}

Boatner, LA ^{[1
]}

Ramey, JO ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 232卷

关键词：

D O I：

10.1016/S0022-3093(98)00379-2

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 technique of high-performance liquid chromatography (HPLC) has been used to determine the phosphate-anion distribution in a variety of metal phosphate glasses-including glasses made with the trivalent metal cations: Al, In, Ga, and La. The composition of each glass was chosen so that the average phosphate chain length was between 2 and 4 PO4 tetrahedra. The widths of the resulting phosphate-anion chain-length distributions were determined directly from an analysis of the HPLC chromatograms. Literature values for the free energy of formation of the crystalline metal-orthophosphate compounds with respect to P2O5 and the metal oxide were compared to the width of the phosphate-anion chain-length distributions. We found that the smaller the energy of formation, the wider the distribution of phosphate chains, and the greater the ease of glass formation. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：107 / 112

页数：6

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