期刊
APPLIED PHYSICS LETTERS
卷 93, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2977863
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- German DFG (SPP Phasenumwandlungen in mehrkomponentigen Schmelzen) [Me 1958/2-3]
Properties of mass transport in liquid Al80Cu20 were measured over a broad temperature range of more than 500 K by means of oscillating cup viscometry and quasielastic neutron scattering. The shear viscosity and the coefficient of the Cu self-diffusion exhibit an Arrhenius-type temperature dependence. The activation energy for the viscous flow is 2.4 times smaller than that of the Cu self-diffusion. Below 1400 K, the Cu self-diffusion becomes increasingly smaller than expected from the viscosity data rescaled via the Stokes-Einstein relation. (C) 2008 American Institute of Physics.
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