Electric current enhanced defect mobility in Ni3Ti intermetallics

被引：291
作者：
Garay, JE
Glade, SC
Anselmi-Tamburini, U
Asoka-Kumar, P
Munir, ZA [1 ]
机构：
[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA
[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.1774268
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of the application of a dc current on the annealing of point defects in Ni3Ti was investigated by positron annihilation spectroscopy. An increased defect annealing rate was observed under the influence of the current and was attributed to a 24% decrease in the activation energy of mobility. The results are interpreted in terms of the electron wind effect and the complex nature of diffusion in ordered intermetallic phases. They provide direct evidence for an increase in defect mobility in ordered intermetallics under the influence of a current. (C) 2004 American Institute of Physics.
引用
收藏
页码：573 / 575
页数：3
相关论文
共 24 条
  • [1] Increased elemental specificity of positron annihilation spectra
    AsokaKumar, P
    Alatalo, M
    Ghosh, VJ
    Kruseman, AC
    Nielsen, B
    Lynn, KG
    [J]. PHYSICAL REVIEW LETTERS, 1996, 77 (10) : 2097 - 2100
  • [2] Asokakumar P, 1996, APPL PHYS LETT, V68, P406, DOI 10.1063/1.116700
  • [3] BAKKER H, 1987, MATER SCI FORUM, P1155
  • [4] The anti-structural bridge mechanism for diffusion in ordered alloys of the B2 type
    Belova, IV
    Murch, GE
    [J]. INTERMETALLICS, 1998, 6 (02) : 115 - 119
  • [5] High-flux current effects in interfacial reactions in Au-Al multilayers
    Bertolino, N
    Garay, J
    Anselmi-Tamburini, U
    Munir, ZA
    [J]. PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 2002, 82 (08): : 969 - 985
  • [6] Electromigration effects in Al-Au multilayers
    Bertolino, N
    Garay, J
    Anselmi-Tamburini, U
    Munir, ZA
    [J]. SCRIPTA MATERIALIA, 2001, 44 (05) : 737 - 742
  • [7] INFLUENCE OF SILVER IMPURITIES ON ANNEALING KINETICS OF QUENCHED GOLD SPECIMENS
    CATTANEO, F
    GERMAGNOLI, E
    [J]. PHYSICAL REVIEW, 1961, 124 (02): : 414 - &
  • [8] Effects of electric current on solid state phase transformations in metals
    Conrad, H
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 287 (02): : 227 - 237
  • [9] The six-jump diffusion cycles in B2 compounds revisited
    Drautz, R
    Fähnle, M
    [J]. ACTA MATERIALIA, 1999, 47 (08) : 2437 - 2447
  • [10] ELOCK EW, 1958, PHYS REV, V109, P605
123