Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-111-C10-114
DOI: 10.1051/jphyscol:19851025
RELAXATION-TIME SPECTRUM FOR A HYDROGEN RELAXATION PEAK IN A Nb-50-at. %-V ALLOY
J.R. COST1, C.L. SNEAD2, Jr.2 et J. BETHIN31 Material Science and Technology Division, Los Alamos National Laboratory, Los Alamos, N.M. 87545, U.S.A.
2 Brookhaven National Laboratory, Upton , N.Y. 11973, U.S.A.
3 Grumman Corp., Bethpage, N.Y. 11714, U.S.A.
Abstract
Internal friction has been measured vs. temperature from 15-330 K for equiatomic Nb-V alloys with up to 28 at. % H. A broad peak at roughly 125 K shows characteristics which strongly suggest that it is a reorientation peak. Detailed analysis using a newly developed method indicates the activation energy spectrum to be bell shaped and to be over the range 0.10 to 0.30 eV. A pre-exponential factor of 5x10-13 is determined.