Localized corrosion resistance of Co-Cr alloy in NaCl solution

Ryouji Suzuki, Kazuhiko Noda, Yusuke Tsutsumi, Takao Hanawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Localized corrosion resistance of Co-Cr alloy in NaCl solution was investigated by using polarization curve measurements. Type 316 stainless steel and Cr were used as comparison materials. According to the polarization curves obtained in this study, the Co-Cr alloy maintained a passive state over a wide potential region. However, the current increment with the localized corrosion was appeared in polarization curves of the type 316 stainless steels. The Co-Cr alloy had high localized corrosion resistance compared to the type 316 stainless steel in NaCl solution. Co-Cr alloy was confirmed to maintain passive state in the potential region, same as that observed for Cr. In addition, the passive current density of the Co-Cr alloy and Cr showed nearly identical values. When used in the environment containing chloride ions, the Co-Cr alloy maintained high localized corrosion resistance with the existence of the chromium oxide film. Because of their excellent corrosion performance, Co-Cr alloys are expected to be safely used as the biomaterials in a long life time.

Original languageEnglish
Title of host publication8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
PublisherJohn Wiley and Sons Inc.
Pages2451-2454
Number of pages4
Volume3
ISBN (Print)9781632660008
Publication statusPublished - 2013
Event8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 - Waikoloa, HI
Duration: 2013 Aug 42013 Aug 9

Other

Other8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
CityWaikoloa, HI
Period13/8/413/8/9

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Keywords

  • Co-Cr alloy
  • Localized corrosion
  • Stainless steel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Suzuki, R., Noda, K., Tsutsumi, Y., & Hanawa, T. (2013). Localized corrosion resistance of Co-Cr alloy in NaCl solution. In 8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 (Vol. 3, pp. 2451-2454). John Wiley and Sons Inc..