"The introduction of Ag into Si-As-Te glasses permits the incorporation of Se, otherwise volatile and/or degradable as a constituent in Si-containing chalcogenide glasses. Si-As-Ag-Te-Se glasses exhibit much higher softening ranges and glass transition temperatures than encountered in known chalcogenide systems. A glass Si35As15Ag10Te20Se20 had the viscosity log η =13 at about 500°C, as compared to 370°C for the base glass Si35As25Te40, the viscosity of log η = 9.8 at about 560°C, as compared to 442°C for the base glass Si35As25Te40. Phase separation occurs in the system Si-As-Ag-Te-Se and becomes manifest in two glass transitions indicated by changes in the slopes of the expansion curves and breaks in the softening point-composition curves. The existence and behavior of Si-As-Ag-Te-Se glasses suggests the possible development of higher Tg infrared transparencies and higher Tg low band gap semiconductor glasses than described so far"--Abstract, page ii.
Kreidl, N. J.
Sorrell, Charles A.
Robertson, B. Ken
Materials Science and Engineering
M.S. in Ceramic Engineering
United States. Office of Naval Research
University of Missouri--Rolla
102 pages in various pagings
© 1972 Henry Edward Anthonis, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Polymers -- Thermal properties
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Electronic OCLC #
Link to Catalog Record
Anthonis, Henry Edward, "Polynary silicon tellurium glasses" (1972). Masters Theses. 3535.