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Title: Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering

Abstract

Quasielastic cold neutron scattering experiments on molten Al{sub 1-x}Cu{sub x} alloys (x = 0.10, 0.17 and 0.25) have been performed at three different temperatures on the FOCUS time-of-flight spectrometer at the Swiss neutron spallation source SINQ. As the main part of the scattering at small Q is incoherent and originating from Cu, self-diffusion coefficients D for the Cu ions could be determined from the widths of quasielastic peaks. The derived values are considerably larger than those found in capillary tube measurements. Even if the accuracy in the determination of D is better than about 4% it could not be concluded whether the temperature variation of D follows an Arrhenius law or a power law.

Authors:
 [1];  [2];  [1];  [3];  [4];  [2];  [5];  [2]
  1. CNRS, Ecole des Mines, Nancy, France
  2. Ames Laboratory
  3. Laboratory for Neutron Scattering ETHZ & PSI
  4. Saarland University, Saarbrucken, Germany
  5. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
932127
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Non-Crystalline Solids; Journal Volume: 353
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ALLOYS; COLD NEUTRONS; DIFFUSION; NEUTRONS; SCATTERING; SELF-DIFFUSION; SPALLATION; TIME-OF-FLIGHT SPECTROMETERS

Citation Formats

Dahlborg, U., Besser, M., Calvo-Dahlborg, M., Janssen, S., Juranyi, Fanni, Kramer, Matthew J., Morris, James R, and Sordelet, Daniel. Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering. United States: N. p., 2007. Web. doi:10.1016/j.jnoncrysol.2007.05.074.
Dahlborg, U., Besser, M., Calvo-Dahlborg, M., Janssen, S., Juranyi, Fanni, Kramer, Matthew J., Morris, James R, & Sordelet, Daniel. Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering. United States. doi:10.1016/j.jnoncrysol.2007.05.074.
Dahlborg, U., Besser, M., Calvo-Dahlborg, M., Janssen, S., Juranyi, Fanni, Kramer, Matthew J., Morris, James R, and Sordelet, Daniel. Mon . "Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering". United States. doi:10.1016/j.jnoncrysol.2007.05.074.
@article{osti_932127,
title = {Diffusion of Cu in AlCu alloys of different composition by quasielastic neutron scattering},
author = {Dahlborg, U. and Besser, M. and Calvo-Dahlborg, M. and Janssen, S. and Juranyi, Fanni and Kramer, Matthew J. and Morris, James R and Sordelet, Daniel},
abstractNote = {Quasielastic cold neutron scattering experiments on molten Al{sub 1-x}Cu{sub x} alloys (x = 0.10, 0.17 and 0.25) have been performed at three different temperatures on the FOCUS time-of-flight spectrometer at the Swiss neutron spallation source SINQ. As the main part of the scattering at small Q is incoherent and originating from Cu, self-diffusion coefficients D for the Cu ions could be determined from the widths of quasielastic peaks. The derived values are considerably larger than those found in capillary tube measurements. Even if the accuracy in the determination of D is better than about 4% it could not be concluded whether the temperature variation of D follows an Arrhenius law or a power law.},
doi = {10.1016/j.jnoncrysol.2007.05.074},
journal = {Journal of Non-Crystalline Solids},
number = ,
volume = 353,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}