Assessment of corrosion resistance and metal ion leaching of nitinol alloys

Waseem Haider, Norman Munroe

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Nitinol usage for biomedical implant devices has received significant attention due to its high corrosion resistance and biocompatibility. However, surface treatments are known to affect surface charge, surface chemistry, morphology, wettability, and corrosion resistance. In this investigation, the corrosion resistance of a binary and various ternary Nitinol alloys was determined after being subjected to electropolishing, magnetoelectropolishing, and water boiling and passivation. Cyclic polarization in vitro corrosion tests were conducted in Phosphate Buffer Saline (PBS) in compliance with ASTM F 2129-08 before and after surface treatments. The concentrations of dissolved metal ions in the electrolyte were also determined by ICPMS.

Original languageEnglish
Pages (from-to)812-815
Number of pages4
JournalJournal of Materials Engineering and Performance
Volume20
Issue number4-5
DOIs
StatePublished - Jul 2011

Keywords

  • Biomaterials
  • Corrosion testing
  • Surface engineering

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