Masters Theses
Abstract
"Internal friction and sodium and potassium self-diffusion coefficients for (1-X)Na₂O · XK₂O· 3SiO₂ glasses were measured. Alkali diffusion was measured between 300 and 500ºC using radioactive isotopes and a thin-sectioning technique. Internal friction was measured from room temperature to 500ºC, 0.1 to 2000 Hz. Comparison between alkali diffusion and internal friction data for Na-K glasses with those for other mixed-alkali glasses shows that the mixed-alkali peak is related to alkali mobility. It is concluded that the mechanism for mixed-alkali internal friction is a cooperative rearrangement of dissimilar alkali ions, with the slower moving ion controlling the rate of reorientation"--Abstract, page iii.
Advisor(s)
Day, D. E.
Kreidl, N. J.
Committee Member(s)
Sorrell, Charles A.,
McDonald, H. O. (Hector O.)
Department(s)
Materials Science and Engineering
Degree Name
M.S. in Ceramic Engineering
Sponsor(s)
U.S. Army Research Laboratory
Publisher
University of Missouri--Rolla
Publication Date
1971
Pagination
viii, 50 pages
Rights
© 1971 James William Fleming, Jr., All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Glass-ceramics
Internal friction -- Measurement
Silicates
Alkalies
Thesis Number
T 2644
Print OCLC #
6039128
Electronic OCLC #
878078071
Link to Catalog Record
Recommended Citation
Fleming, James W. Jr., "Alkali mobility and mechanical relaxation in mixed-alkali silicate glasses" (1971). Masters Theses. 5087.
https://scholarsmine.mst.edu/masters_theses/5087
Comments
The author wishes to express his appreciation for the aid and advice given by Dr. Delbert E. Day, major advisor--Page iv. N.J. Kreidl signed as advisor on title page.