Quantitative Prediction of Voids Formation in a Growing Cobaltous Oxide Scale at 1373 K

• Akiba Kojiro

  Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology

• Ueda Mitsutoshi

  Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology

• Kawamura Kenichi

  Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology

• Maruyama Toshio

  Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology

Abstract

Quantitative prediction of voids formation is demonstrated for CoO scale formed at 1373 K. Calculations of ion fluxes and their divergence in CoO scales can predict the void formation in the scale which mostly occurs in the vicinity of the metal/oxide interface. The volume fraction of voids is found to be maximum at the initial surface. These predictions are in good agreement with the observed morphology of CoO scale obtained in high temperature oxidation of cobalt at 1373 K.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 48 (11), 2997-3006, 2007

  The Japan Institute of Metals and Materials

Keywords

• cobaltous oxide scale
• voids formation
• chemical potential distribution
• divergence of ion flux

Details

• CRID: 1390282679226760832
• NII Article ID: 10019789758
• NII Article ID: 130004453427
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mer2007180
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 8979610
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8979610
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/48/11/48_MER2007180/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed