The Mechanism of Localized In-pile Corrosion of Zirconium Alloys.

• OZAKI Satoru

  Nuclear Engineering Laboratory, Toshiba Corporation

Bibliographic Information

Other Title

• Mechanism of Localized In-pile Corrosio

Abstract

The role of β-particles for the localized in-pile corrosion of components made of zirconium alloys, such as fuel channels closely facing stainless steel components, has been discussed and the distribution of β-particles near fuel channels has been evaluated using a multi-layer calculation method.<BR>It is shown that electric charges which come from β-particles produced mainly by the Compton effect, but not by β-emitting radionuclides, make electric fields in and on the zirconium oxide surfaces in the reactor by a model analogous to an electric circuit, and that these electric fields induced by β-particles could be essential for the understanding of localized in-pile corrosion of zirconium alloys. The mechanism of the localized in-pile corrosion of zirconium alloys adjacent to other welded alloys is also discussed as an enhanced corrosion by electric potentials using the proposed electric circuit model in detail.

Journal

• Journal of Nuclear Science and Technology

  Journal of Nuclear Science and Technology 35 (9), 654-661, 1998

  Atomic Energy Society of Japan

Keywords

• zirconium alloys
• fuel channels
• stainless steels
• weld shadow
• shadow phenomena
• in pile corrosion
• enhanced corrosion
• adjacent effects
• beta particles
• electric fields
• calculations

Details

• CRID: 1390001204094965504
• NII Article ID: 10002080055
• NII Book ID: AA00703720
• DOI: 10.3327/jnst.35.654
• COI: 1:CAS:528:DyaK1cXntlKlsrs%3D
• ISSN: 18811248
• ISSN: 00223131
• NDL BIB ID: 4565729
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4565729
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed