EFFECTS OF OXIDATION ON THE ATMOSPHERIC CORROSION OF PERMALLOY-FILMS

被引:21
作者
LEE, WY
SCHERER, G
GUARNIERI, CR
机构
[1] IBM Research Laboratory, San Jose
关键词
atmospheric corrosion; oxidation; Permalloy; radiation damage; thin films;
D O I
10.1149/1.2129323
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Auger electron spectroscopy, x-ray photoelectron spectroscopy, and ion sputtering techniques were used to analyze the oxide formed on the surfaces of 1000A thick, e-beam deposited Permalloy films. These films were oxidized under 1 atm O2 pressure and at temperatures between 160° and 250°C. Fe is found to preferentially oxidize to Fe2O3 on the outermost surface with Ni enrichment uniformly distributed throughout the entire unoxidized portion of the alloy. Oxide growth follows a parabolic rate law, and the activation energy of oxidation is estimated to be ~0.5 eV. Corrosion characteristics of Permalloy thin films are quite sensitive to the nature of the surface oxide layer. Proper postoxidation treatments have proven to be effective in increasing their atmospheric corrosion resistance. This is interpreted in terms of the formation of a hydrated Fe2O3 layer with relatively small defect density. © 1979, The Electrochemical Society, Inc. All rights reserved.
引用
收藏
页码:1533 / 1539
页数:7
相关论文
共 46 条
  • [1] X-RAY PHOTOELECTRON-SPECTROSCOPY OF IRON-OXYGEN SYSTEMS
    ALLEN, GC
    CURTIS, MT
    HOOPER, AJ
    TUCKER, PM
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1974, (14): : 1525 - 1530
  • [2] ANDERSON JR, 1967, APR P IRRE AUSTR
  • [3] Anderson R. L., 1973, Journal of Electronic Materials, V2, P161, DOI 10.1007/BF02666150
  • [4] X-RAY PHOTOELECTRON-SPECTRUM OF FE2+ STATE IN IRON OXIDES
    ASAMI, K
    HASHIMOTO, K
    SHIMODAIRA, S
    [J]. CORROSION SCIENCE, 1976, 16 (01) : 35 - 45
  • [5] X-RAY PHOTOELECTRON-SPECTRA OF SEVERAL OXIDES OF IRON AND CHROMIUM
    ASAMI, K
    HASHIMOTO, K
    [J]. CORROSION SCIENCE, 1977, 17 (07) : 559 - 570
  • [6] ON CL- BREAKDOWN OF PASSIVE FILMS ON MILD STEEL
    ASHWORTH, V
    BODEN, PJ
    LEACH, JSL
    NEHRU, AY
    [J]. CORROSION SCIENCE, 1970, 10 (07) : 481 - &
  • [7] BOCKRIS JO, 1972, ELECTROCHEMICAL SCI, P259
  • [8] BRUNDLE CR, UNPUBLISHED
  • [9] BRUNDLE CR, 1977, SURF SCI, V68, P458
  • [10] CHUANG TJ, 1977, 7TH P INT VAC C 3RD