Title

Preparation and Properties of Oxynitride Glasses Made from 27R2O · 20BaO · 3Al2O3 · 50P2O5 Glass

Abstract

The preparation of oxynitride glasses, made by remelting 27R2O · 20BaO · 3Al2O3 · 50P2O5 glasses in anhydrous ammonia vapor, is described. Depending upon the melting temperature, processing time, and alkali ion size, glasses containing up to ≈ 6 wt% nitrogen were prepared. The oxynitride glasses had a lower dissolution rate in deionized water and thermal expansion coefficient, but a higher dilatometric softening temperature, refractive index, and Vickers microhardness. Models for nitrogen dissolution are discussed and used to calculate the glass composition from the measured weight loss and analyzed nitrogen content.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Glass Manufacture; Dilatometric Softening Temperature; Oxynitride Glasses; Thermal Expansion Coefficient; Vickers Microhardness

International Standard Serial Number (ISSN)

0022-3093; 1873-4812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 Elsevier, All rights reserved.

Share

 
COinS