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Proceedings Paper

Mechanical Properties Of Chalcogenide Glasses
Author(s): E. Hartouni; J. J. Mecholsky
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Paper Abstract

The elastic modulus, hardness, and fracture energy were measured for 'simple' chalcogenide glasses (e.g., Se and As2S3) and for more complicated glasses (e.g., Ge33As12Se55 and 0.3PbSe - 0.7Ge1.5As0.5Se3). Although the more complicated glasses tended to have improved mechanical properties (i.e., higher elastic modulus and hardness), this was not always the case, i.e. fracture energy varied. Further investigation is necessary to clarify the effect of composition on mechanical properties. The stress corrosion susceptibility, n, of As2S3 infrared fibers and bulk glass was compared and shown to be similar for two different techniques of measurement; Slow crack growth measurements on bulk glass using the constant double cantilever beam determined n to be 17. Strength - stressing rate experiments on fibers determined n to be between 11 and 17 depending on processing. Fracture surface analysis of these fibers and other bulk glasses showed that we can expect different fracture characteristics for chalcogenide glasses than for silicates possibly due to the existence of viscoelastic effects during fracture.

Paper Details

Date Published: 19 December 1986
PDF: 6 pages
Proc. SPIE 0683, Infrared and Optical Transmitting Materials, (19 December 1986); doi: 10.1117/12.936421
Show Author Affiliations
E. Hartouni, Advanced Manufacturing Technology (United States)
J. J. Mecholsky, Pennsylvania State University (United States)

Published in SPIE Proceedings Vol. 0683:
Infrared and Optical Transmitting Materials
Robert W. Schwartz, Editor(s)

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