Electrochemical Characteristics of Fe-Cu-C Sintered Steels

• Kanno Koki

  Höganäs Japan K.K.

• Sunada Satoshi

  Toyama University

• Majima Kazuhiko

  Toyama University

• Ishida Miho

  Student of Toyama University

• Takeda Yoshinobu

  Höganäs Japan K.K.

Abstract

General structural components are widely made of Fe-Cu-C sintered steels. However, corrosion behavior of these components was not clear, as there are lots of factors to determine corrosion speed. Therefore the influence of (1) purity for sintered steel of pure iron powders and (2) additives of different copper for sintered steels of Fe-Cu-C powders on their corrosion behavior was investigated by using electrochemical methods including electrochemcal impedance spectroscopy (EIS). New approaching ways are very useful to determine the mechanism of corrosion behavior more clearly for sintered steels of pure iron material and even Fe-Cu-C material that showed more complicated phenomena. Corrosion behavior of sintered steels of pure iron is correlated with density and that of Fe-Cu-C sintered steels is more complicated. Addition of copper and carbon accelerates cathodic reaction, but depolarization of anode reaction dominates corrosion speed among Fe-Cu-C materials.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 53 (8), 661-666, 2006

  Japan Society of Powder and Powder Metallurgy

Keywords

• Fe-Cu-C sintered steels
• Corrosion
• Polarization Characteristics diagram
• Nyquist diagram

Details

• CRID: 1390282681284442880
• NII Article ID: 10019289401
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.53.661
• COI: 1:CAS:528:DC%2BD28Xps1arur4%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 8081466
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8081466
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed