Comparison of corrosion properties of passive films formed on coarse grained and ultrafine grained AISI 2205 duplex stainless steels

Lv Jinlong, Liang Tongxiang, Wang Chen, Dong Limin

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The ultrafine grained 2205 duplex stainless steel with an average grain size of 300 nm was obtained by cold rolling down to 95% reduction in thickness and reversion annealing at 900 °C for 200 s. The ultrafine grained sample showed higher corrosion resistance than coarse grain one in borate buffer solution at room temperature, indicating that the passive film formed on the surface of the ultrafine grained 2205 duplex stainless steel is more protective. Comparing the doping concentrations between coarse grain and ultrafine grained samples from the Mott-Schottky plots, higher corrosion resistance of ultrafine grained sample was probably attributed to lower donor density and the thicker passive film in borate buffer solution. The results of electrochemical impedance spectroscopy were further supported by Raman spectra and XPS analysis.

Original languageEnglish
Pages (from-to)263-269
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume757
DOIs
Publication statusPublished - 2015 Nov 15

Keywords

  • Defects
  • Epitaxial growth
  • Metals
  • Thin films
  • X-ray diffraction

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Fingerprint Dive into the research topics of 'Comparison of corrosion properties of passive films formed on coarse grained and ultrafine grained AISI 2205 duplex stainless steels'. Together they form a unique fingerprint.

  • Cite this