Evaluation of corrosion resistance and cytocompatibility of graded metal carbon film on Ti and NiTi prepared by hybrid cathodic arc/glow discharge plasma-assisted chemical vapor deposition

Mohammed Ibrahim Jamesh, Penghui Li, Marcela M.M. Bilek, R. L. Boxman, David R. McKenzie, Paul K. Chu

Research output: Contribution to journalArticlepeer-review

Abstract

Hybrid cathodic arc/glow discharge plasma-assisted chemical vapor deposition is used to prepare graded films on Ti and NiTi. XPS reveals the formation of a Ti and carbon graded interface between the substrate and carbon surface layer. The graded film significantly improves the corrosion resistance of Ti and NiTi in 154mM NaCl as demonstrated by the smaller corrosion current density, larger resistance, and smaller capacitance. The graded film on NiTi shows near-capacitive impedance spectra and 14 times larger phase angle maxima at 105Hz. In addition, the osteoblasts cells spread well on the graded film surface suggesting good cytocompatibility.

Original languageEnglish
Pages (from-to)126-138
Number of pages13
JournalCorrosion Science
Volume97
DOIs
StatePublished - 1 Aug 2015

Keywords

  • B. EIS
  • B. SEM
  • B. XPS
  • C. Amorphous structures

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