Masters Theses

Abstract

"The effect of dissolved water on borate glasses containing 4-20 mol % Ag2O was investigated. Water was dissolved in the glasses by bubbling with a carrier gas (oxygen) containing different partial pressures of water vapor. A minimum in water solubility was found at 11 mol % Ag2O. Water contents in excess of 0.5 mol % H2O did not have a great effect on the transition temperature or the dilatometric softening point. Below 15 mol % Ag2O, the water content had no effect on the thermal expansion coefficients. Beyond 15 mol % Ag2O, the thermal expansion coefficients remain nearly constant for the wet glasses, but show a slight increase for the dry glasses. The water content was not observed to significantly affect the UV or visible spectra before or after x-ray irradiation. Differences in the location of the UV absorption edge and the minimum in the water solubility curve, when compared to alkali borate glasses, is attributed to electronic differences between silver and alkali ions"--Abstract, page ii.

Advisor(s)

Day, D. E.

Committee Member(s)

Kreidl, N. J.
Tappmeyer, Wilbur P.

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Ceramic Engineering

Sponsor(s)

National Science Foundation (U.S.)
University of Missouri--Rolla. Department of Ceramic Engineering

Comments

Financial assistance of National Science Foundation Grant 32956

Publisher

University of Missouri--Rolla

Publication Date

1974

Pagination

vii, 49 pages

Note about bibliography

Includes bibliographical references (pages 41-44).

Rights

© 1974 E Richard Reynolds, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Borates -- Analysis
Silver compounds -- Analysis
Borates -- Spectra
Glass -- Research

Thesis Number

T 2980

Print OCLC #

6024353

Electronic OCLC #

914168902

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