multilayered Ti/TiN coating;
metal ion release;
artificial saliva;
corrosion resistance;
D O I:
10.1016/j.corsci.2007.03.041
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
The effects of multilayered Ti/TiN or single-layered TiN films deposited by pulse-biased arc ion plating (PBAIP) on the corrosion behavior of NiTi orthodontic brackets in artificial saliva are investigated. The multilayered Ti/TiN coating is found to exhibit a greater free corrosion potential, much lower passive current density, and no breakdown up to 1.5 V. Moreover, electrochemical impedance spectroscopy (EIS) results indicate that the multilayered Ti/TiN coating has a larger impedance and lower porosity which is believed to be responsible for the exceedingly low metal ion release rate during 720 h exposure in the test solution. Visual inspection of the surfaces reveals different corrosion processes for the TiN and multilayered Ti/TiN coatings. (c) 2007 Elsevier Ltd. All rights reserved.
机构:
Cruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Ogawa, Celso M.
Faltin Jr, Kurt
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h-index: 0
机构:
Univ Paulista UNIP, Dept Orthodont, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Faltin Jr, Kurt
Maeda, Fernando A.
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机构:
Univ City Sao Paulo UNICID, Dept Orthodont & Radiol, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Maeda, Fernando A.
Ortolani, Cristina L. F.
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机构:
Univ Paulista UNIP, Dept Orthodont, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Ortolani, Cristina L. F.
Guare, Renata O.
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机构:
Cruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Guare, Renata O.
Cardoso, Cristiane A. B.
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机构:
Cruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil
Cardoso, Cristiane A. B.
Costa, Andre L. F.
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机构:
Cruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, BrazilCruzeiro Sul Univ UNICSUL, Dept Dent, Postgrad Program Dent, Sao Paulo, Brazil