Masters Theses

Abstract

"The purpose of this work was to investigate the properties of Y₂O₃-Al₂O₃-SiO₂-MxOy glasses. Many MxOy components were tested, but TiO₂ and B₂O₃ proved the most interesting. Glasses containing 5 to 25 wt % TiO₂ were melted and found to have improved chemical durability and a higher refractive index and density than the eutectic Y₂O₃-Al₂O₃-SiO₂ starting glass. These glasses could be crystallized to form an opaque glass ceramic. Glasses containing B₂O₃ were formed by exchanging SiO₂ with B₂O₃ while holding the Y₂O₃ and Al₂O₃ content constant. The density, hardness, refractive index, transformation temperature, softening temperature and chemical durability decreased with increasing B₂O₃ content, while the thermal expansion coefficient increased"--Abstract, page 1.

Advisor(s)

Day, D. E.

Committee Member(s)

Howard, Scott A.
Kohser, Ronald A.

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Ceramic Engineering

Publisher

University of Missouri--Rolla

Publication Date

Summer 1987

Pagination

vii, 47 pages

Note about bibliography

Includes bibliographical references (pages 22-23).

Rights

© 1987 Amy Lee Applewhite, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Ceramic-matrix composites
Refractive index
Glass -- Heat treatment

Thesis Number

T 5530

Print OCLC #

17499179

Electronic OCLC #

904718918

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