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

doi:10.1016/j.surfcoat.2014.05.037

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

16 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 (R_ct) as compared with the TiCN coating (0.99at.% carbon) owing to more a-CN_x and higher electrical resistivity.

Original language	English
Pages (from-to)	199-204
Number of pages	6
Journal	Surface and Coatings Technology
Volume	253
DOIs	https://doi.org/10.1016/j.surfcoat.2014.05.037
Publication status	Published - 2014 Aug 25

Keywords

Electrochemistry
Impedance
Polarization
Simulated body fluid
Sputtered coatings

ASJC Scopus subject areas

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

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10.1016/j.surfcoat.2014.05.037

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title = "Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid",

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.",

keywords = "Electrochemistry, Impedance, Polarization, Simulated body fluid, Sputtered coatings",

author = "Qianzhi Wang and Fei Zhou and Zhifeng Zhou and Li, {Lawrence Kwok Yan} and Jiwang Yan",

year = "2014",

month = aug,

day = "25",

doi = "10.1016/j.surfcoat.2014.05.037",

language = "English",

volume = "253",

pages = "199--204",

journal = "Surface and Coatings Technology",

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TY - JOUR

T1 - Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid

AU - Wang, Qianzhi

AU - Zhou, Fei

AU - Zhou, Zhifeng

AU - Li, Lawrence Kwok Yan

AU - Yan, Jiwang

PY - 2014/8/25

Y1 - 2014/8/25

N2 - 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.

AB - 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.

KW - Electrochemistry

KW - Impedance

KW - Polarization

KW - Simulated body fluid

KW - Sputtered coatings

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DO - 10.1016/j.surfcoat.2014.05.037

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SN - 0257-8972

VL - 253

SP - 199

EP - 204

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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