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Indentation et rhéologie de verres inorganiques de 20 à 700 ° C

Abstract : In order to study viscoelastic behavior of three different kinds of inorganic glasses (window glass, Te2-Se3-As5 chalcogenide glass and Zr based bulk metallic glass) in their glass transition range, we developed a high temperature load-depth-sensing micro-indentation device. Due to its difficulty to measure accurately both load and displacement at high temperature, only few studies have attempted to determine the key parameters of viscoelastic flow with this technique. This apparatus allows to perform creep indentation tests with several geometries of indenter (spherical, cylindrical and Vickers) up to 1100 ° C with a maximum load of 15 N. Creep indentation tests were conducted on a standard window glass to measure its viscosity between 540 and 640 ° C and the influence of the load and the indenter geometry on the measurement was also studied. Viscosity with respect to temperature was in good agreement with other results from literature, independently from indenter geometry or load we used. The same analysis was conducted on the two other glasses in the vicinity of their glass transition.
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Contributor : Cédric Bernard <>
Submitted on : Tuesday, July 7, 2009 - 4:16:33 PM
Last modification on : Tuesday, January 12, 2021 - 4:48:31 PM
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  • HAL Id : tel-00402562, version 1

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Cédric Bernard. Indentation et rhéologie de verres inorganiques de 20 à 700 ° C. Mécanique [physics.med-ph]. Université Rennes 1, 2006. Français. ⟨tel-00402562⟩

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