Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid
Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid
TiCN coatings with low carbon concentrations (0.99 at.%–2.46 at.%) were deposited on Si(100) wafers via cosputtering 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 (0.99 at.% or 2.05 at.% carbon), which exhibited favorable corrosion resistances in SBF. But the presence of a-C in TiCN coating (2.46 at.% carbon) lowered its hardness, and subsequently deteriorated its corrosion resistance in SBF. In particular, the TiCN coating with 2.05 at.% carbon presented the higher charge transfer resistance (Rct) as compared with the TiCN coating (0.99 at.% carbon) owing to more a-CNx and higher electrical resistivity.
sputtered coatings, electrochemistry, impedance, polarization, simulated body fluid
199-204
Wang, Qianzhi
696b2954-9bbe-4e19-a9d2-22435e55d9b4
Zhou, Fei
aaf54725-aefa-4df9-a69c-07b3f60060fc
Zhou, Zhifeng
fb070de3-bcb2-4923-9c60-e76b61f89f5f
Li, Lawrence Kwok-Yan
1be013ff-b4b7-4479-a8b6-08a515c967e6
Yan, Jiwang
5941b300-5771-4494-9bd0-bb932725d894
25 August 2014
Wang, Qianzhi
696b2954-9bbe-4e19-a9d2-22435e55d9b4
Zhou, Fei
aaf54725-aefa-4df9-a69c-07b3f60060fc
Zhou, Zhifeng
fb070de3-bcb2-4923-9c60-e76b61f89f5f
Li, Lawrence Kwok-Yan
1be013ff-b4b7-4479-a8b6-08a515c967e6
Yan, Jiwang
5941b300-5771-4494-9bd0-bb932725d894
Wang, Qianzhi, Zhou, Fei, Zhou, Zhifeng, Li, Lawrence Kwok-Yan and Yan, Jiwang
(2014)
Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid.
Surface and Coatings Technology, 253, .
(doi:10.1016/j.surfcoat.2014.05.037).
Abstract
TiCN coatings with low carbon concentrations (0.99 at.%–2.46 at.%) were deposited on Si(100) wafers via cosputtering 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 (0.99 at.% or 2.05 at.% carbon), which exhibited favorable corrosion resistances in SBF. But the presence of a-C in TiCN coating (2.46 at.% carbon) lowered its hardness, and subsequently deteriorated its corrosion resistance in SBF. In particular, the TiCN coating with 2.05 at.% carbon presented the higher charge transfer resistance (Rct) as compared with the TiCN coating (0.99 at.% carbon) owing to more a-CNx and higher electrical resistivity.
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Accepted/In Press date: 12 May 2014
e-pub ahead of print date: 27 May 2014
Published date: 25 August 2014
Keywords:
sputtered coatings, electrochemistry, impedance, polarization, simulated body fluid
Organisations:
nCATS Group
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Local EPrints ID: 377165
URI: http://eprints.soton.ac.uk/id/eprint/377165
ISSN: 0257-8972
PURE UUID: a4ab6df4-3339-458c-b734-8786bc6d0274
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Date deposited: 01 Jun 2015 13:41
Last modified: 14 Mar 2024 19:57
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Author:
Qianzhi Wang
Author:
Fei Zhou
Author:
Zhifeng Zhou
Author:
Lawrence Kwok-Yan Li
Author:
Jiwang Yan
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