Please use this identifier to cite or link to this item: doi:10.22028/D291-24050
Title: Mechanical properties of ZBLAN glasses
Author(s): Delben, A. A. S. T.
Messaddeq, Younes
Caridade, M. D.
Aegerter, Michel A.
Eiras, J. A.
Language: English
Year of Publication: 1993
OPUS Source: Journal of non-crystalline solids. - 161. 1993, S. 165-168
SWD key words: Mechanische Eigenschaft
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Elastic moduli (E, G, K, v) of various ZBLAN glass compositions have been determined using pulse echo ultrasonic technique. Vickers microhardness, Hv, was measured under 100 g load and also determined systematically as a function of the load (30-125 g) for a ZBLAN11.6 composition submitted to different surface treatments such as storage in dry and wet atmosphere and optical polishing. In all cases, Hv increases with load until reaching an almost constant value Hv ≅ 200 kg/mm2 for load > 100 g. The hardness variation with load is similar for as-prepared glasses stored in dry or wet atmosphere but is more pronounced for samples with a polished surface. The results are explained by a model which assumes that Hv is determined by the weighted average of plastically deformed volumes in a surface layer and in the bulk. The model allows one to estimate their microhardness and the thickness of the surface layer. © 1993.
Link to this record: urn:nbn:de:bsz:291-scidok-21822
Date of registration: 2-Jul-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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