Wetting of single crystal mullite by borosilicate and yttrium-aluminosilicate glasses and wetting phenomena of steels containing aluminum and titanium

Author

Benjamin T. Eldred

Abstract

"This dissertation consists of two major sections. The first section concerns the wetting of single crystal mullite by borosilicate and yttrium-alluminosilicate glasses. The borosilicate glass showed poor wetting and interacted only moderately with the substrate. The yttrium-aluminosilicate glass interacted strongly with mullite and showed very good wetting. Balanced chemical equations between each glass and mullite were derived from EDS data. Wetting was found to be dependent on the crystallographic orientation of the substrate, in agreement with previous studies of the surface energy of mullite. The second section concerns the wetting phenomena of steels containing aluminum and titanium. A modified sessile drop technique was used to investigate the wetting of steels containing aluminum and/or titanium as a function of furnace atmosphere. It was found that the steel chemistry and furnace atmosphere had little effect on wetting except in the case of a particular ultra-low carbon steel containing both aluminum and titanium. This steel was found to show significantly lower contact angles than any other steel tested when it was in an atmosphere of pure hydrogen. As nitrogen was added to the atmosphere, the contact angle increased monotonically and irreversibly. The interaction between aluminum, titanium, and nitrogen is explained in terms of first-order interaction coefficients available in thermodynamic literature"--Abstract, page iii.

Advisor(s)

Ownby, P. D.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Ceramic Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 2004

Journal article titles appearing in thesis/dissertation

• Wetting phenomena of steels containing aluminum and titanium

Pagination

xi, 93 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2004 Benjamin Todd Eldred, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Subject Headings

WettingMullite -- SurfacesSteel

Thesis Number

T 8635

Print OCLC #

61852894

Recommended Citation

Eldred, Benjamin T., "Wetting of single crystal mullite by borosilicate and yttrium-aluminosilicate glasses and wetting phenomena of steels containing aluminum and titanium" (2004). Doctoral Dissertations. 1551.
https://scholarsmine.mst.edu/doctoral_dissertations/1551