Properties and structure of ternary BaO-SnO-P2O5 glasses

被引：7

作者：

Hoppe, U. ^{[1
]}

Saitoh, A. ^{[2
]}

Shimizu, T. ^{[2
]}

Tricot, G. ^{[3
]}

Hannon, A. C. ^{[4
]}

机构：

[1] Univ Rostock, Inst Phys, D-18051 Rostock, Germany

[2] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

[3] Univ Lille, LASIRE UMR CNRS 8516, F-59655 Villeneuve Dascq, France

[4] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2022年 / 597卷

关键词：

Tin barium phosphate glasses; Photoelastic constant; Neutron diffraction; Short-range order; Medium-range order; 31P magic angle spinning -nuclear magnetic resonance; OPTICAL-PROPERTIES; X-RAY; DIFFRACTION; PHOSPHATE; NMR; PYROPHOSPHATE; PAIRS;

D O I：

10.1016/j.jnoncrysol.2022.121909

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：

Series of Ba/Sn phosphate glasses (33 and 40 mol% P2O5) are investigated by 31P MAS NMR and neutron diffraction to clarify the effects of substituting Sn with Ba. The structural parameters are related to glass prop-erties, among them to the photoelastic constant (PEC). Different from the increase of the Sn-O coordination number to four in Zn/Sn phosphate glasses (33 mol% P2O5) the NSnOs of 3.2 and 3.4 do not change with substituting Sn with Ba. The stacking of layer-like entities of Sn or Ba oxygen polyhedra is suggested to cause the first scattering peak at 12 nm-1. Non-bridging oxygens shared by two or more Ba2+ lead to stiff networks with increasing BaO content which is accompanied with increasing Tg, decreasing thermal expansion, and better corrosion resistance. The slopes of the compositional dependence of the PEC of the Ba/Sn glasses are smaller than reported for Zn/Sn glasses which corresponds to the constant NSnOs.

引用

页数：10