電気化学的手法によるSPS技術により作製したSUS304ステンレス鋼の腐食特性  [in Japanese] Corrosion Characteristics of SUS304 Stainless Steel Produced by SPS Process through Electrochemical Method  [in Japanese]

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Author(s)

    • 砂田 聡 SUNADA Satoshi
    • 富山大学大学院理工学研究部, ナノ・新機能材料学域 ナノマテリアル・システムデザイン学系 Graduate School of Science and Engineering for Research, University of Toyama
    • 真島 一彦 MAJIMA Kazuhiko
    • 富山大学大学院理工学研究部, ナノ・新機能材料学域 ナノマテリアル・システムデザイン学系 Graduate School of Science and Engineering for Research, University of Toyama

Abstract

The corrosion behavior of SUS304 specimen produced by spark plasma sintering (SPS) has been studied through electrochemical tests such as polarization curve measurement, electrochemical reactivation ratio measurement and electrochemical impedance spectroscopy (EIS), compared to those of specimens produced by the conventional ingot metallurgy process (I/M) and the powder metallurgy process (P/M).<BR>The corrosion current density (<I>i</I><SUB>corr</SUB>) of the SPS specimen has a tendency increasing with a decrease in electrochemical corrosion potential (<I>E</I><SUB>corr</SUB>). The corrosion resistant of the SPS specimen was inferior to that of the I/M specimen because of carbon diffusion from a graphite punch rod while it was improved by removing the surface file through polishing.<BR>The electrochemical reactivation ratio of the SPS specimen without polishing was 27.4%, which was significantly higher compared to 0.13% for the I/M specimen because of its poor passivation film.<BR>The <I>R</I><SUB>ct</SUB> value of the SPS specimen without polishing was 0.09 times as large as that of the I/M specimen, while it became 0.63 times for the SPS specimen with polishing. This result well agrees with the <I>i</I><SUB>corr</SUB> value obtained by the electrochemical polarization test.

Journal

  • Journal of the Japan Society of Powder and Powder Metallurgy

    Journal of the Japan Society of Powder and Powder Metallurgy 54(8), 612-618, 2007-08-15

    Japan Society of Powder and Powder Metallurgy

References:  19

Codes

  • NII Article ID (NAID)
    10019562946
  • NII NACSIS-CAT ID (NCID)
    AN00222724
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    05328799
  • NDL Article ID
    8932394
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-274
  • Data Source
    CJP  NDL  J-STAGE 
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