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Improvement of Environmental Resistance by Nano-Scale Surface Modification

Research Project

Project/Area Number 08405048
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionOsaka University

Principal Investigator

SHIBATA Toshio  Graduate School of Engineering, Osaka University, Professor, 大学院・工学研究科, 教授 (90001205)

Co-Investigator(Kenkyū-buntansha) HARUNA Takumi  Graduate School of Engineering, Osaka University, Research Associate, 大学院・工学研究科, 助手 (70243186)
FUJIMOTO Shinji  Graduate School of Engineering, Osaka University, Assistant Professor, 大学院・工学研究科, 講師 (70199371)
TANIGUCHI Shigeji  Graduate School of Engineering, Osaka University, Associate Professor, 大学院・工学研究科, 助教授 (50029196)
Project Period (FY) 1996 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥38,300,000 (Direct Cost: ¥38,300,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1998: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 1997: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1996: ¥25,800,000 (Direct Cost: ¥25,800,000)
KeywordsStainless Steel / Passive Film / Porous Film / Semiconductor Oxide / Ion Beam / Photo electrochemistry / Sputtered Film / High Temperature Oxidation / 機能表面 / 不働態 / 構造制御 / 電気化学 / イオン注入 / スパッタ薄膜 / 紫外光 / 透過電子顕微鏡 / 耐環境性材料 / 表面分析 / X線光電子分光法 / イオンビーム・スパッタリング / 薄膜 / 合金化 / 微量元素 / 局部腐食
Research Abstract

The corrosion resistance is obtained by the surface oxide film, which prevents the substrate alloys from harmful effect of the environment. Therefore, the corrosion resistance is highly depends on the structure of the surface film. In the present work, we developed some processes, which modify nano structure of the surface film to obtain more protective films. The summaries are described below. (1) Chemical modification of passive film on stainless steels; the combination of active dissolution and passivation derived selective Fe dissolution and Cr enrichment in the passive film to show excellent corrosion resistance. Especially, a process in F? ions containing bath was developed. (2) Ion implantation on stainless steels; Cr implantation derived the passive film with concentrated Cr. However, it was proved that pre and post treatments to modify the nano structure of the substrate were necessary in order to obtain high corrosion resistance. (3) Modification of passive film by ultra-violet light irradiation; passive film of Fe-Cr and stainless steels were modified by uv light irradiation to obtain much higher corrosion resistance. The photo quantum effect enriched the Cr in the passive film. (4) Formation of high corrosion resistance thin alloys film with ordered structure by ion beam sputtering; very high corrosion resistant stainless steel films were obtained with chemical composition of ordinary grade, but with highly homogeneous structure. The effects of additives were also discussed. (5) Nano modification of the oxide scales formed on TiAl by very small Zr addition; the high temperature corrosion resistance of TiAl was improved by 0.2% Zr addition to TiAl. Zr addition was proved to modify the AlィイD22ィエD2OィイD23ィエD2 scale thinner and more homogeneous. The Zr addition changed the nano structure of scales to reduce diffusion of oxygen inward.

Report

(5 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (46 results)

All Other

All Publications (46 results)

  • [Publications] S. Fujimoto: "Impedance and Photoelectrochemical Properties of Porous Oxide Film on Type 304 Stainless"Journal of Electroanalytical Chemistry. 473・1/2. 265-271 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto: "Formation and Properties of Ti-rich Oxide Layer on Fe-Ti Alloys by Square Wave Potential"Electrochemistry. 67・12. 1156-1158 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto: "Extremely High Corrosion Resistance of Thin Film Stainless Steels Deposited by Ion Beam"Journal of Materials Science and Engineering A. 267・2. 314-318 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 柴田俊夫: "pHを変化させたフッ化物水溶液中においてType304鋼に生成した不働態皮膜の耐硫酸腐食性と皮膜組成"表面技術. 50・5. 453-459 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 柴田俊夫: "2段硫酸不働耐化処理によるType304ステンレス鋼の耐孔食性向上効果"材料と環境. 48・3. 155-161 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 藤本慎司: "硫酸水溶液中でFe-18Cr合金に生成する不働態皮膜の紫外光照射による改質"日本金属学会誌. 63・3. 375-382 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 柴田俊夫: "微量フッ化物含有HNO_3不働態化処理によるType304ステンレス鋼の耐孔食性向上効果"材料と環境. 48・1. 41-46 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto: "Improvement of Localized Corrosion Resistance of Austenitic Stainless Steel by N, Cr, and Mo Ion Implantation"Proceedings of the International Ion Technology Conference, IEEE. 1074-1077 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto and T. Shibata: "Impedance and Photoelectrochemical Properties of Porous Oxide Film on Type304 Stainless"Journal of Electroanalytical Chemistry. 473[1/2]. 265-271 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto and T. Shibata: "Formation and Properties of Ti-rich Oxide Layer on Fe-Ti Alloys by Square Wave Potential"Electrochemistry. 67[12]. 1156-1158 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto and T. Shibata: "Extremely High Corrosion Resistance of Thin Film Stainless Steels Deposited by Ion Beam"Journal of Materials Science and Engineering. A67[12]. 1156-1158 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shibata, O. Yamazaki and S. Fujimoto: "Against Sulfuric Acid Attack of Passive Film Formed on SUS304 Stainless Steel in Fluoride Solutions"Hyomen-Gijutsu. 50[5]. 453-459 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shibata, O. Yamazaki and S. Fujimoto: "Two-Stage HNOィイD23ィエD2 Passivation Treatment for Improving the Pitting Corrosion Resistance of Type304 Stainless Steel"Zairyo-to-Kankyo. 48[3]. 155-161 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shibata, O. Yamazaki and S. Fujimoto: "The Effect of F in the HNOィイD23ィエD2 Passivation Treatment for Improvinf the Pitting Resistance of Type304 Stainless Steel"Zairyo-to-Kankyo. 48,[1]. p. 41-46 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, S. Kawachi, and T. Shibata: "Modification of Passive Film Formed on an Fe-18Cr Alloy in Sulphuric Acid Solution by Ultra-Violet Light Irradiation"Journal of Japan Institute of Metals. 63[3]. 375-382 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, O. Chihara, and T. Shibata: "Photo Electrochemical Response of Passive Films Formed on Pure Cr and Fe-Cr Alloys in Sulphuric Acid Solution"Materials Science Forum. 289/292. 989-996 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, T. Yamada, and T. Shibata: "Suppression of Pitting Corrosion with Passive Film Modification on Type304 Stainless Steel by Ultra-Violet Light Irradiation"Journal of Japanese Institute of Metals. 62[6]. 527-533 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, T. Yamada and T. Shibata: "Improvement of Pitting Corrosion Resistance of Type 304 Stainless Steel by Modification of Passive Film with Ultra-Violet Light Irradiation"Journal of the Electrochemical Society. 145[5]. L. 79-81 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shibata, T. Yamada, and S. Fujimoto: "Inhibition of Pit Generation on SUS304 Stainless Steel in Chloride Solution by Ultra-Violet Light Irradiation"Journal of Institute of Metals. 61[3]. 249-250 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shibata, Y. Inohara, S. Fujimoto, and T. Haruna: "Effect of Crystallization on the Stochastic Pit Generation Process of Fe-Cr-Si-B Amorphous Alloy"Materials Transactions, JIM. 37[12]. 1774-1780 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, H. Nakatsu, S. Hata and T. Shibata: "Extraordinarily Thick Passive Film Formation on Ni-Cr Alloy with Square Wave Potential Pulse Polarization"Corrosion Science. 38[9]. 1473-1483 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujimoto, S. Kawachi and T. Shibata: "Modification of Passive Film on Fe-Cr Alloys with Ultra-Violet Light Irradiation"Proceedings of 8th International Symposium on Passivity of Metals and Semiconductor, Jasper, Canada, 9-14 May 1999, The Electrochemical Society. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Fujmoto, T. Kato, S. Taniguchi: "TEM Observation of the Initial Stage of Oxidation on TiAl and TiAl-0.2Zr Intermetallic Compounds"Journal of Japan Institute of Metals. (to be published.).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S.Fujimoto: "Impedance and Photoelectrochemical Properties of Porous Oxide Film on Type304 Stainless"Journal of Electroanalytical Chemistry. 473・1/2. 265-271 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.Fujimoto: "Formation and Properties of Ti-rich Oxide Layer on Fe-Ti Alloys by Square Wave Potential"Electrochemistry. 67・12. 1156-1158 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.Fujimoto: "Extremely Higy Corrosion Resistance of Thin Film Stainless Steels Deposited by Ion Beam"Journal of Materials Science and Engineering A. 267・2. 314-318 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 柴田俊夫: "pHを変化させたフッ化物水溶液中においてType304鋼に生成した不働態皮膜の耐硫酸腐食性と皮膜組織"表面技術. 50・5. 453-459 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 柴田俊夫: "2段硝酸不働態化処理によるType304ステンレス鋼の耐孔食性向上効果"材料と環境. 48・3. 155-161 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 藤本慎司: "硫酸水溶液中でFe-18Cr合金に生成する不働態皮膜の紫外光照射による改質"日本金属学会誌. 63・3. 375-382 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 柴田俊夫: "微量フッ化物含有HNO_3不働態化処理によるType304ステンレス鋼の耐孔食性向上効果"材料と環境. 48・1. 41-46 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.Fujimoto: "Improvement of Localized Corrosion Resistance of Austenitic Stainless Steel by N. Cr and Mo Ion Implantation"Proceedings of the International Ion Technology Conference, IEEE. 1074-1077 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 藤本慎司、柴田俊夫: "鉄系金属ステンレス鋼の不働態皮膜" 表面科学. 19・12. 812-818 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Fujimoto,T.Shibata: "Photo Electrochemical Response of Passive Films Formed on Pure Cr and Fe-Cr Alloys in Sulphuric Acid Solution" Materials Sciences Forum. 289/292. 989-996 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Fujimoto,T.Shibata: "Improvement of Pitting Corrosion Resistance of Type304 Stainless Steel by Modification of Passive Film with Ultraviolet Light Irradiation" Journal of Electrochemical Society. 145・5. L79-81 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 藤本慎司、柴田俊夫: "硫酸水溶液中でFe-18Cr合金に生成する不働態皮膜の紫外光照射による改質" 日本金属学会誌. 63・3. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Taniguchi,K.Uesaki,Y.-C.Zhu,H.-X.Zhang and T.Shibata: "Influence of Niobium Ion Implantation on the Oxidation Behaviour of TiAl under Thermal Cycle Conditions." Materials Scuence and Engineering. A249-1. 223-228 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Taniguchi,H.Juso and T.Shibata: "Effect of Hf Addition on the Isothermal Oxidation Behaviour of TiAl at High Temperatures" Oxidation of Metals. 49-3/4. 325-330 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 藤本愼司、柴田俊夫: "ステンレス鋼の表面改質" バウンダリ-. 14・1. 4-9 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujimoto, O.Chihara, T.Shibata: "Photo Current Response of Passive Film Formed on Pure Cr and Fe-18Cr Alloys in Sulphuric Acid Solution" Materials Science Forum. 発表予定. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Shinohara, S.Fujimoto, R.C.Newman et al: "Numerical and Ecperimental Simulation of Iron Dissolution in a Crevice with Very Dilute Bulk Solution" Journal of Electrochemical Society. 144・11. 3791-3796 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujimoto, T.Yamada and T.Shibata: "improvement of Pitting Corrosion Resistance of Type304 Stainless Steeel by Modification of Passive Film with Uitra-Violet Light Irradiation" Journal of Electrochemical Society. 145・5. in press (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Taniguchi, H.Juso and T.Shibata:"Effect of Nb-Ion Implantation on the Oxidation Resistance of TiAl." Materials Transaction.JIM,. 37 3. 245-251 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Haruna, T.Shibata and R.Toyota:"The Effect of Potential on the Initiation and the Propagation of Stress Corrosion Cracks for Type 304L Stainless Steel in a Chloride Solution Containing Thiosulfate:" Corrosion Science,. (in press). (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤本愼司: "不働態皮膜の構造制御と耐環境性" 表面技術. 47・12. 1019-1024 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Fujimoto: "Extraordinarily Thick Passive Film Formation on Ni-Cr Alloy with Square Wave Potential Pulse Polarization" Corrosion Science. 38・9. 1473-1483 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Shibata: "Effect of Crystallization on the Stochastic Pit eneration Process of Fe-Cr-Si-B Amorphous Alloy" Materials Transactions,Japan Institute of Metals. 37・12. 1774-1780 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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