Numéro
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
Page(s) C5-541 - C5-546
DOI https://doi.org/10.1051/jphyscol:1981582
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 42 (1981) C5-541-C5-546

DOI: 10.1051/jphyscol:1981582

VERY LOW FREQUENCIES INTERNAL FRICTION MEASUREMENTS OF ICE Ih

J. Tatibouet, J. Perez et R. Vassoille

Groupe d'Etudes de Métallurgie Physique et Physique des Matériaux, I.N.S.A., Bât. 502, E.R.A. 463, 69621 Villeurbanne Cedex, France


Abstract
Very low frequencies internal friction measurement (1 - 10-4 Hz) in ice permitted to increase the knowledge of the internal friction of ice, especially the relaxation phenomenon. The activation energy of the relaxation is 0.25 eV, a caracteristic value of the migration of rotational defects. It follows a Curie Law. Experiments after different cooling rate put in evidence the role of intrinsic defects.