Development of Electrochemical Surface Treatment for Improvement of Localized Corrosion Resistance of Zirconium in Chloride Environment

• Manaka Tomoyo

  Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University

• Tsutsumi Yusuke

  Research Center for Structural Materials, National Institute for Materials Science

• Ashida Maki

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University

• Chen Peng

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University

• Katayama Hideki

  Research Center for Structural Materials, National Institute for Materials Science

• Hanawa Takao

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Center for Advanced Medical Engineering Research and Development, Kobe University

Abstract

An electrochemical surface treatment technique was developed in this study to improve the localized corrosion resistance of zirconium in a chloride ion environment. A combination of anodic and cathodic polarization cycles was applied to induce the selective dissolution of the inclusions that could potentially initiate the localized corrosion of zirconium. Shallow dips were observed on the specimen surface after the treatment, thereby indicating the dissolution of the inclusions. The electrochemical treatments via galvanostatic anodic polarization and potentiostatic cathodic polarization in concentrated phosphate-buffered saline resulted in a high pitting potential of greater than 2 V in a simulated body fluid. This indicated that the devised technique realized a significant increase in the localized corrosion resistance of the treated Zr.   This Paper was Originally Published in Japanese in Zairyo-to-Kankyo 69 (2020) 307–314. The captions of Figs. 2–14 and Table 1 are slightly modified.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 62 (6), 788-796, 2021-06-01

  The Japan Institute of Metals and Materials

Keywords

• zirconium
• pitting corrosion
• localized corrosion
• biomaterials
• inclusions
• anodic polarization
• cathodic polarization
• simulated body fluid
• surface treatment

Details

• CRID: 1390006662423954304
• NII Article ID: 130008042823
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.c-m2021817
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 031470518
• Web Site: http://id.ndl.go.jp/bib/031470518
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031470518
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/62/6/62_C-M2021817/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed