• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Sensing of a crevice corrosion by pattern recognition of an electrochemical oscillation

Research Project

Project/Area Number 15K13806
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Inorganic industrial materials
Research InstitutionKyoto University

Principal Investigator

Fukami Kazuhiro  京都大学, 工学研究科, 准教授 (60452322)

Co-Investigator(Renkei-kenkyūsha) SAKKA Tetsuo  京都大学, 大学院工学研究科, 教授 (10196206)
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords腐食 / センシング / 非線形化学 / 隙間腐食 / 電気化学振動 / 鉄 / 電流振動
Outline of Final Research Achievements

We studied an analysis of electrochemical oscillations observed in anodic dissolution of a metallic Fe electrode. The analysis of the oscillation gave important information on electrochemical dissolution of a metallic Fe electrode placed within a crevice. The shape of current oscillations measured under a constant potential near the Flade potential was strongly related to the local environment in the vicinity of the electrode surface. Especially, it indirectly show the increase of local pH within the crevice. In the present case, we detected the increase of H+ concentration which was four times higher in the crevice than the bulk. Also, the amplitude of the current oscillation gave the information of active electrode area within the crevice. The active electrode area estimated from the analysis of amplitude nicely fitted in that evaluated by microscope observations.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2016 2015

All Presentation (3 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Presentation] Current Oscillations Measured on an Iron Electrode Placed within a Crevice2016

    • Author(s)
      Tomoya Manno, Kazuhiro Fukami, Atushi Kitada, Kuniaki Murase
    • Organizer
      Electrochemistry 2016
    • Place of Presentation
      Goslar, Germany
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 隙間での鉄のアノード分極下でみられる電流振動2016

    • Author(s)
      万ノ友哉、深見一弘、北田敦、邑瀬邦明
    • Organizer
      電気化学会第83回大会
    • Place of Presentation
      大阪
    • Year and Date
      2016-03-29
    • Related Report
      2015 Research-status Report
  • [Presentation] Spatial pattern formation in electrochemical dissolution of silicon2015

    • Author(s)
      Kazuhiro Fukami
    • Organizer
      8th International Conference on Engineering of Chemical Complexity
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2015-04-16   Modified: 2018-03-22  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi