The effects of straining frequency and stress ratio on polarization current responded to cyclic strain in a commercial iron

Eiji Tada, Kazuhiko Noda, Shinji Kumai, Tooru Tsuru

研究成果: Article査読

9 被引用数 (Scopus)

抄録

Corrosion fatigue tests of a commercial iron were carried out using a cylindrical specimen with a hole in a borate buffer solution containing 5mol/m3 NaCl at a constant passive potential. Polarization current behavior induced by strain cycles has been investigated in order to elucidate the effects of straining frequency and stress ratio. The amplitude of polarization current synchronized with the strain cycle and the phase shift between the polarization current and the strain were calculated. The polarization current obtained prior to the crack initiation was found to be the charging and discharging current of the electric double layer capacitance. The corrosion damage increased as decreasing the straining frequency in the initial stage of crack propagation. The increased corrosion damage was observed at the reduced stress ratio.

本文言語English
ページ(範囲)1189-1196
ページ数8
ジャーナルISIJ International
37
12
DOI
出版ステータスPublished - 1997
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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