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Viscosity of As2Se3 Glass During the Fiber Drawing Process

Authors


  • J. Heo—contributing editor

  • This work was financially supported by a grant from the Ministry of Research and Higher Education and Region of Bretagne.

†Author to whom correspondence should be addressed. e-mail: tanguy.rouxel@univ-rennes1.fr

Abstract

The viscosity of As2Se3 glass within the hot zone region of the fiber drawing process was estimated using the actual temperature distribution and standard continuum mechanics equations for a linear viscous material. The obtained values for the shear viscosity lie between 103 and 106 Pa·s and are in good agreement with those extrapolated from bending and penetration tests at a lower temperature. In our condition, neck-down region is to be found almost independent on the drawing rate or on the fiber tension.

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