In-situ electrochemical impedance spectroscopy investigations on the early stage corrosion behavior of Zircaloy-4 in high-temperature lithiated water

Xiangyu Zhong, Moucheng Li, Bangxin Zhou, Meiyi Yao, Jianian Shen

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The corrosion behavior of Zircaloy-4 (Zry-4) at 360 °C 0.01 M LiOH aqueous solution was in-situ monitored by electrochemical impedance spectroscopy (EIS). The EIS spectra of the as-received Zry-4 (Zry-4A) shows two-time constants feature during corrosion. The oxide layer impedance and capacitive show cyclic behavior while those of β-quenched Zry-4 sample (Zry-4Q) increased with exposure time increases. It may relate to the evolution of the defects and dielectric property of the oxide film and relaxation which evolves after the stress relief. The effect of heat treatment on the corrosion mechanism of the Zircaloy-4 was discussed.

Original languageEnglish
Article number109223
JournalCorrosion Science
Volume182
DOIs
Publication statusPublished - 2021 Apr 15

Keywords

  • A: Zircaloy-4
  • B: Electrochemical impedance spectroscopy
  • C: High-temperature corrosion
  • C: Oxide film

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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