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Microhardness of chalcogenide glasses of the system Se-Ge-As

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Abstract

The microhardness of chalcogenide glasses of the system Se-Ge-As was investigated for twelve different compositions. An apparatus was constructed which was capable of recording loading and unloading curves, and the results evaluated according to the method of Fröhlich and Grau. The Vickers microhardness valuesL 2(vh) obtained were independent of load and are thought to be material constants. TheseL 2(vh) values varied between 700 and 1400 N mm−2 in the Se-Ge-As system and showed a non-linear dependence on composition. This is explained structurally by the existence of varying proportions of different short-range order units in the different glasses. The elastic recovery after unloading varied between 45 and 61% for a maximum load of 1.96 N.

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Author notes

  1. B. D. Michels

    Present address: Hermann C. Starck, Werk Goslar, Berlin, West Germany

Authors and Affiliations

  1. Arbeitsgruppe Glas, Lehrstuhl für Glas und Keramik, Technische Universität Clausthal, Clausthal-Zellerfeld, West Germany

    B. D. Michels & G. H. Frischat

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  1. B. D. Michels
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  2. G. H. Frischat
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Michels, B.D., Frischat, G.H. Microhardness of chalcogenide glasses of the system Se-Ge-As. J Mater Sci 17, 329–334 (1982). https://doi.org/10.1007/BF00591466

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