Liquid Al80Cu20:: Atomic diffusion and viscosity

被引:46
作者
Brillo, J. [1 ]
Chathoth, S. M. [2 ]
Koza, M. M. [3 ]
Meyer, A. [1 ]
机构
[1] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-51170 Cologne, Germany
[2] Tech Univ Munich, Phys Dept E13, D-85747 Garching, Germany
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
关键词
D O I
10.1063/1.2977863
中图分类号
O59 [应用物理学];
学科分类号
摘要
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.
引用
收藏
页数:3
相关论文
共 27 条
[1]   Reference data for the density and viscosity of liquid aluminum and liquid iron [J].
Assael, MJ ;
Kakosimos, K ;
Banish, RM ;
Brillo, J ;
Egry, I ;
Brooks, R ;
Quested, PN ;
Mills, KC ;
Nagashima, A ;
Sato, Y ;
Wakeham, WA .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 2006, 35 (01) :285-300
[2]  
BINDER K, 2005, GLASSY MATS INTRO TH
[3]  
Boon JP., 1980, MOL HYDRODYNAMICS
[4]   The breakdown of the Stokes-Einstein relation in supercooled binary liquids [J].
Bordat, P ;
Affouard, F ;
Descamps, M ;
Müller-Plathe, F .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (32) :5397-5407
[5]   Density and thermal expansion of liquid binary Al-Ag and Al-Cu alloys [J].
Brillo, Jürgen ;
Egry, Ivan ;
Westphal, Jenny .
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques, 2008, 99 (02) :162-167
[6]   Measurement of viscosities of metals and alloys with an oscillating viscometer [J].
Brooks, RF ;
Day, AP ;
Andon, RJL ;
Chapman, LA ;
Mills, KC ;
Quested, PN .
HIGH TEMPERATURES-HIGH PRESSURES, 2001, 33 (01) :73-82
[7]   Heterogeneity at the glass transition: Translational and rotational self-diffusion [J].
Chang, I ;
Sillescu, H .
JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (43) :8794-8801
[8]   Atomic diffusion in liquid Ni, NiP, PdNiP, and PdNiCuP alloys [J].
Chathoth, SM ;
Meyer, A ;
Koza, MM ;
Juranyi, F .
APPLIED PHYSICS LETTERS, 2004, 85 (21) :4881-4883
[9]  
CHATHOTH SM, 2005, THESIS TU MUNCHEN
[10]   Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering [J].
Dahlborg, U. ;
Besser, M. ;
Calvo-Dahlborg, M. ;
Janssen, S. ;
Juranyi, F. ;
Kramer, M. J. ;
Morris, J. R. ;
Sordelet, D. J. .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2007, 353 (32-40) :3295-3299