Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid

Qianzhi Wang, Fei Zhou, Zhifeng Zhou, Lawrence Kwok Yan Li, Jiwang Yan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

TiCN coatings with low carbon concentrations (0.99at.%-2.46at.%) were deposited on Si(100) wafers via co-sputtering titanium and graphite targets by using unbalanced magnetron sputtering. The influence of carbon content on the microstructure and electrochemical properties of TiCN coatings in simulated body fluid was analyzed. The results revealed that the amorphous carbon (a-C) was absent from TiCN coatings (0.99at.% or 2.05at.% carbon), which exhibited favorable corrosion resistances in SBF. But the presence of a-C in TiCN coating (2.46at.% carbon) lowered its hardness, and subsequently deteriorated its corrosion resistance in SBF. In particular, the TiCN coating with 2.05at.% carbon presented the higher charge transfer resistance (Rct) as compared with the TiCN coating (0.99at.% carbon) owing to more a-CNx and higher electrical resistivity.

Original languageEnglish
Pages (from-to)199-204
Number of pages6
JournalSurface and Coatings Technology
Volume253
DOIs
Publication statusPublished - 2014 Aug 25

Fingerprint

body fluids
Body fluids
Carbon
coatings
Coatings
carbon
Amorphous carbon
Corrosion resistance
corrosion resistance
Graphite
Titanium
Electrochemical properties
Magnetron sputtering
Sputtering
Charge transfer
Hardness
magnetron sputtering
Microstructure
hardness
graphite

Keywords

  • Electrochemistry
  • Impedance
  • Polarization
  • Simulated body fluid
  • Sputtered coatings

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid. / Wang, Qianzhi; Zhou, Fei; Zhou, Zhifeng; Li, Lawrence Kwok Yan; Yan, Jiwang.

In: Surface and Coatings Technology, Vol. 253, 25.08.2014, p. 199-204.

Research output: Contribution to journalArticle

Wang, Qianzhi ; Zhou, Fei ; Zhou, Zhifeng ; Li, Lawrence Kwok Yan ; Yan, Jiwang. / Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid. In: Surface and Coatings Technology. 2014 ; Vol. 253. pp. 199-204.
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