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Corrosion Fatigue Mechanism and Its Electrochemical Evaluation in Moist Environments

Research Project

Project/Area Number 10305053
Research Category

Grant-in-Aid for Scientific Research (A).

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionTokyo Institute of Technology

Principal Investigator

TSURU Tooru  Tokyo Institute of Technology, Graduate School of Science and Engineering, Professor, 大学院・理工学研究科, 教授 (20092562)

Co-Investigator(Kenkyū-buntansha) ARAOKA Aya  Tokyo Institute of Technology, Graduate School of Science and Engineering, Research Associate, 大学院・理工学研究科, 助手 (40323787)
NISHIKATA Atsushi  Tokyo Institute of Technology, Graduate School of Science and Engineering, Associate Professor, 大学院・理工学研究科, 助教授 (90180588)
沼田 博雄  東京工業大学, 大学院・理工学研究科, 助手 (50156155)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥37,300,000 (Direct Cost: ¥37,300,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥15,900,000 (Direct Cost: ¥15,900,000)
Fiscal Year 1998: ¥18,300,000 (Direct Cost: ¥18,300,000)
Keywordswater film / amplitude of potential / corrosion potential / frequency analysis / crack growth / fatigue crack / harmonics / wet and dry process / 腐食疲労 / 不働態 / 高調波解析 / レーザー顕微鏡 / 繰り返し応力 / 再不働態化
Research Abstract

This research project was proposed to simulate the corrosion fatigue behavior in wet and dry or moist environments and to establish an evaluation method based on electrochemistry. In this project, anodic dissolution current at a crack tip or change in electrode potential induced by mechanical strain were measured and those wave forms were analyzed by Fourie analysis. Our preliminary experiments suggested that the content and magnitude of higher harmonics component in the current or potential responses have good relation with the initiation and growth of the fatigue cracks. The main purpose of this project is that to establish a procedure to detect and evaluate the crack initiation and growth rate from the electrochemical data.
Harmonics analysis of the crack current which synchronized to the strain wave revealed that the initiation of crack was detected clearly. A model of crack growth was proposed and checked again for the simulated current by the harmonics analysis. These simulations … More performed for dipped condition supported that opening of the crack at the tip started when the strain reached to some threshold level and decay of the anodic current occurred exponentially.
Under a wet and dry cycle condition, the crack and surroundings were covered very thin water layer. Before the crack initiation, the potential waveform in drying condition was less than 0.5mV and this potential change caused by charge and discharge of the electrical double layer. After the crack initiation, the amplitude of the potential increased up to several mV and opening of the crack leaded a decrease in potential so that the sinusoidal waveform was truncated around the maximum strain. The harmonics analysis on the potential waveforom indicated that the second harmonics component increased by the crack, so this can be used as a indication of crack initiation for the monitoring of corrosion fatigue. In case of corrosion fatigue test by four points bending, very thin water layer formed for long time and anodic reaction was suppressed by deposition of corrosion products, therefore acceleration of the crack growth rate did not observed. Less

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] 尾山由紀子,西方篤,水流徹: "薄い水膜下での腐食疲労損傷にともなう電位・電流応答の検討"2000年電気化学会秋季大会講演要旨集. 192 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 山崎隆生,西方篤,水流徹: "電解液薄膜下における酸素還元-酸素の溶解と拡散速度の測定-"材料と環境2000講演集. 249-250 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama,Atsushi Nishikata,Tooru Tsuru: "Dissolution and passivation of fresh surface at crack tip on corrosion fatigue process"Passivity and Localized Corrosion, The Electrochemical Society. 634-643 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama,Atsushi Nishikata,Tooru Tsuru: "Electrode potential monitoring for corrosion fatigue under wet-dry condition"Marine Corrosion and Control. 402-414 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 山崎隆生,西方篤,水流徹: "電解液薄膜下における酸素還元-酸素の溶解と拡散速度の測定-"材料と環境. 50・1. 30-33 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Eiji Tada, Kazuhiko Noda, Shinji Kumai and Tooru Tsuru: "Investigation of the Mechanism of the Corrosion Fatigue by Analysis of Cyclic Strain and Current Response"J.Japan Inst.Metals. 63 [8]. 1075-1082 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama, Atsushi Nishikata and Tooru Tsuru: "Dissolution and Passivation of Fresh Surface at Craqck Tip on Corrosion Fatigue Process""Passivity and Localized Corrosion, Proc. Intn'l Symp. in Honor of Prof. Norio Sato", (Hawaii, 1999), The Elechtrochemical Society. PV99-27. 634-642 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang Yanliang, Akira Nakajima, Atsushi Nishikata and Tooru Tsuru: "Effect of Mechanical Deformation on Permeation of Hydrogen in Iron""Marine Corrosion and Control, Proc. Intn'l Symp. on Marine Corrosiuon and Control", (Quingda, 2000), China Ocean Press. 112-120 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama, Atsushi Nishikata and Tooru Tsuru: "Electrodeb Potential Monotoring for Corrosion Fatigue under Wet-dry Condition""Marine Corrosion and Control, Proc. Intn'l Symp. on Marine Corrosiuon and Control", (Quingdao, 2000), China Ocean Press. 402-414 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takao Yamazaki, Atsushi Nishikata and Tooru Tsuru: "Oxygen Reduction under a Thin Electrolyte Film - Measurement of Oxygen Dissolution and Diffusion Rates-"Zairyo-to-Kankyo. 50[1]. 30-33 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] "Monitoring of Corrosion Fatigue Crack Behavior by Stress Induced Current"Corros. Sci.. Submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] iko Oyama, Atsushi Nishikata and Tooru Tsuru: "Current Responses to Continuous Load Cycles during Corrosion Fatigue Tests"Zairyo-to-Kankyo. Submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama, Atsushi Nishikata and tooru Tsuru: "Dissolution and Passivation of Fresh Surface at Craqck Tip on Corrosion Fatigue Process"Meeting Abs. Electrochem Soc., (Hawaii, 1999). [2]. 492 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang Yanliang, Akira Nakajima, Atsushi Nishikata and Tooru Tsuru: "Effect of Mechanical Deformation on Permeation of Hydrogen in Iron"Intn'l Symp. on Marine Corrosiuon and Control (Quingdao, 2000).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yukiko Oyama, Atsushi Nishikata and Tooru Tsuru: "Electrodeb Potential Monotoring for Corrosion Fatigue under Wet-dry Condition"Intn'l Symp. on Marine Corrosiuon and Control", (Quingdao, 2000).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 尾山由紀子,西方篤,水流徹: "薄い水膜下での腐食疲労損傷にともなう電位・電流応答の検討"2000年電気化学会秋季大会講演要旨集. 192 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 山崎隆生,西方篤,水流徹: "電解液薄膜下における酸素還元-酸素の溶解と拡散速度の測定-"材料と環境2000講演集. 249-250 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yukiko Oyama,Atsushi Nishikata,Tooru Tsuru: "Dissolution and passivation of fresh surface at crack tip on corrosion fatigue process"Passivity and Localized Corrosion, The Electrochemical Society. 634-643 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yukiko Oyama,Atsushi Nishikata,Tooru Tsuru: "Electrode potential monitoring for corrosion fatigue under wet-dry condition"Marine Corrosion and Control. 402-414 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 山崎隆生,西方篤,水流徹: "電解液薄膜下における酸素還元-酸素の溶解と拡散速度の測定-"材料と環境. 50・1. 30-33 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 多田英司、野田和彦、熊井真次、水流 徹: "繰返しひずみ-電流応答解析による腐食疲労機構の解析"日本金属学会誌. 63・8. 1075-1082 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yukiko OYAMA,Atsushi NISHIKATA and Tooru TSURU: "Dissolution and Passivation of Fresh Surface at Crack Tip on Corrosion Fatigue Process"Meeting Abs. 99-2, The Electrochem. Soc., ♯492, (Hawaii, 99.10). (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 尾山由紀子、多田英司、西方 篤、水流 徹: "動的ひずみに誘起される電流による腐食疲労過程の検討"材料と環境'99講演集. 87-90 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 西方 篤、山田昭彦、水流 徹: "水膜下における錆に覆われた鋼のインピーダンス特性と腐食モニタリング"日本金属学会秋期大会講演概要. 100 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.TSURU,E.TADA,Y.OYAMA: "Frequency Domain Analysis on Mechano-electrochemical Reactions" Proc.4th Intn'l Conf.Electrochemmical Impedance Spectroscopy. 12-14 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 水流 徹: "動的環境下における機械-電気化学インピーダンス解析" 構造材料の環境脆化における水素の機能に関する調査報告書,科学技術庁研究開発局. 66-72 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西方 篤,水流 徹: "交流法による鉄鋼材料の大気腐食のモニタリング" 第3回超鉄鋼ワークショップ耐食鋼課題別討論会講演集. 41-49 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 水流 徹,尾山由紀子,西方 篤,多田英司: "繰り返しひずみに応答する電流周波数解析" '98電気化学秋季大会講演要旨集. 101 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] R.P.VERA CRUZ,A.NISHKATA,T.TSURU: "Pitting Corrosion Mechanism of Stainless Steels under Wet-Dry Exposure in Chloride-containing Environment" Corros.Sci.40. 125-139 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.TSURU,A.NISHIKATA,K.NODA: "New Electrochemical Techniques for Corrosion Studies of Galvanized Steels" Proc.4th Intn'l.Conf.On Zinc and Zinc Alloy Coated Steel Sheet. 371-375 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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