Effects of bovine serum albumin on the corrosion behaviour of AISI 316L, Co-28Cr-6Mo, and Ti-6Al-4V alloys in phosphate buffered saline solutions

Shima Karimi, Tirdad Nickchi, Akram Alfantazi

Research output: Contribution to journalArticlepeer-review

179 Scopus citations

Abstract

The corrosion behaviour of AISI 316L, wrought Co-28Cr-6Mo and Ti-6Al-4V was studied in aerated solutions of phosphate buffered saline (PBS) at various concentrations of bovine serum albumin (BSA) at 37 °C. Open circuit potential, potentiodynamic polarization, linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) experiments along with X-ray photoelectron spectroscopy (XPS) on Co-28Cr-6Mo oxide layer were conducted to study the interaction of BSA and passive layers and to measure the corrosion rates. Ti-6Al-4V alloy had the lowest corrosion rate and the highest breakdown potential. It was shown that BSA has enhanced the alloy passive film stability at higher concentrations.

Original languageBritish English
Pages (from-to)3262-3272
Number of pages11
JournalCorrosion Science
Volume53
Issue number10
DOIs
StatePublished - Oct 2011

Keywords

  • A. Alloy
  • B. EIS
  • B. Polarization
  • C. Passive films

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