Removal of Oxide Layer on Metal Surface by Vacuum Arc

• Takeda Koichi

  Advanced Technology Research Laboratories, Nippon Steel Corporation

• Takeuchi Sunao

  Advanced Technology Research Laboratories, Nippon Steel Corporation

Bibliographic Information

Other Title

• Removal of Oxide Layer on Metal Surface

Abstract

The interesting properties of cathode spots were investigated in the removal of an oxide layer on metal surface by a vacuum arc. The cathode spots attack the oxides selectively and remove them by evaporation. The observed removal rate of the oxide layer increases in proportion to the arc current and in inverse proportion to the thickness of the oxide layer. Considering the energy balance at the cathode spot, the authors have developed a simplified model to predict the removal rate. The theoretical results agree with the experimental ones qualitatively. The modeling reveals that there exists a critical current density below which the removal of oxides does not occur.

Journal

• Materials Transactions, JIM

  Materials Transactions, JIM 38 (7), 636-642, 1997

  The Japan Institute of Metals

Keywords

• vacuum arc
• cathode spot
• oxide layer
• descaling
• surface cleaning

Details

• CRID: 1390001204247421824
• NII Article ID: 130003556945
• NII Article ID: 10002453254
• NII Book ID: AA10699969
• DOI: 10.2320/matertrans1989.38.636
• COI: 1:CAS:528:DyaK2sXmtVKgu78%3D
• ISSN: 2432471X
• ISSN: 09161821
• ISSN: http://id.crossref.org/issn/09161821
• NDL BIB ID: 4270734
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4270734
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1989/38/7/38_7_636/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed