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On the Application of Acoustic Emission Analysis to Evaluate the Integrity of Protective Coatings on High-Temperature Alloys

  • H. Jonas
  • D. Stöver
  • R. Hecker
Conference paper
Part of the Mikrochimica Acta Supplementum book series (MIKROCHIMICA, volume 11)

Abstract

Protective coatings extend the range of applications for materials. Surface properties can be selectively adapted for each problem. Thus bare high-temperature alloys for heat exchanging units used e.g. in high-temperature systems for producing substitute natural gas do not have sufficient protection against undesirable tritium permeation from the helium primary gas into the substitute natural gas generated. A chromium oxide coating, on the other hand, of only a few µm in thickness ensures a barrier effect combined with an inhibitive factor H = 10001.

Keywords

Acoustic Emission Protective Coating Hydrogen Permeation Permeation Measurement Permeation Barrier 
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References

  1. 1.
    H. P. Buchkremer et al., Advances in the Development and Description of Tritium Permeation Barriers, in: High-Temperature Alloys, Nucl. Techn. 66, Sept. 1984.Google Scholar
  2. 2.
    H. Nickel and K. Koizlik, Thin Solid Films 108, 401 (1983).CrossRefGoogle Scholar
  3. 3.
    H. Jonas and J. A. Golczewski, J. Nucl. Mater. 120 (1984).Google Scholar
  4. 4.
    D. R. Holmes and R. T. Pascoe, Werkstoffe und Korrosion 23 (1972).Google Scholar
  5. 5.
    C. Christopher et al., Thin Solid Films 119, 173 (1984).CrossRefGoogle Scholar
  6. 6.
    R. E. Wright, J. Am. Cer. Soc. 55, 54 (1971).CrossRefGoogle Scholar
  7. 7.
    R. Benz, IRW, KFA Jülich, personal communication.Google Scholar

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • H. Jonas
    • 1
  • D. Stöver
    • 1
  • R. Hecker
    • 1
  1. 1.Institut für ReaktorentwicklungKernforschungsanlage Jülich GmbHJülichFederal Republic of Germany

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