TY - JOUR
T1 - Influence of ageing conditions on the mechanical properties of Te-As-Se fibres
AU - Delaizir, Gaelle
AU - Sangleboeuf, Jean Christophe
AU - King, Ellyn A.
AU - Gueguen, Yann
AU - Zhang, Xiang Hua
AU - Boussard-Pledel, Catherine
AU - Bureau, Bruno
AU - Lucas, Pierre
PY - 2009
Y1 - 2009
N2 - Mechanical properties of chalcogenide glass fibres from the system Te-As-Se have been investigated as a function of environment (ageing in air, under vacuum and under static stress) through a series of tensile strength measurements. It is shown that the surface quality has a decisive effect on the tensile strength of the fibre. Surface degradation due to air oxidation induces a noticeable decrease in strength. However, a series of mechanical tests performed on fibres preserved in vacuum indicate that structural relaxation of the chalcogenide glass also plays a preponderant role in the loss of mechanical strength. Indeed the trend in mechanical properties correlates well with calorimetric characterizations performed on these glasses. Finally, it is observed that the application of a long-term static stress along the fibre induces a net increase in the tensile strength. These effects are associated with a partial alignment of the chalcogenide chains present in the glass structure. This is consistent with the observation of a longitudinal permanent deformation of these fibres under static stress.
AB - Mechanical properties of chalcogenide glass fibres from the system Te-As-Se have been investigated as a function of environment (ageing in air, under vacuum and under static stress) through a series of tensile strength measurements. It is shown that the surface quality has a decisive effect on the tensile strength of the fibre. Surface degradation due to air oxidation induces a noticeable decrease in strength. However, a series of mechanical tests performed on fibres preserved in vacuum indicate that structural relaxation of the chalcogenide glass also plays a preponderant role in the loss of mechanical strength. Indeed the trend in mechanical properties correlates well with calorimetric characterizations performed on these glasses. Finally, it is observed that the application of a long-term static stress along the fibre induces a net increase in the tensile strength. These effects are associated with a partial alignment of the chalcogenide chains present in the glass structure. This is consistent with the observation of a longitudinal permanent deformation of these fibres under static stress.
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U2 - 10.1088/0022-3727/42/9/095405
DO - 10.1088/0022-3727/42/9/095405
M3 - Article
AN - SCOPUS:65449190233
SN - 0022-3727
VL - 42
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 9
M1 - 095405
ER -