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Surface modification of CP-Ti to improve the fretting-corrosion resistance: Thermal oxidation vs. anodizing
Satendra Anand Kumar, , Suresh Krishnamoorthy Seshadri
Published in
2010
Volume: 30
   
Issue: 6
Pages: 921 - 927
Abstract
Fretting corrosion is one of the important reasons for the failure of prosthesis made of titanium and titanium alloys under in vivo condition. The fretting-corrosion behaviour of untreated, anodized and thermally oxidized commercially pure titanium (CP-Ti) in Ringer's solution was evaluated based on the change in free corrosion potential (FCP) measured as a function of time. A comparison of the performance of untreated, anodized and thermally oxidized CP-Ti under fretting-corrosion conditions is reported for the first time in this paper. The study reveals that surface modification of CP-Ti by both anodizing and thermal oxidation improved the fretting-corrosion resistance of CP-Ti and among them the performance of thermally oxidized CP-Ti is superior to that of the anodized one. Adhesive galling is the predominant wear mechanism for untreated CP-Ti, adhesive wear and delamination are found to be operative for anodized CP-Ti whereas an abrasive wear mechanism is operative for thermally oxidized CP-Ti when they are fretted against an alumina ball. © 2010 Elsevier B.V. All rights reserved.
About the journal
JournalMaterials Science and Engineering C
ISSN09284931
Open AccessNo
Concepts (24)
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    ABRASIVE WEARS
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    ADHESIVE WEARS
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    ALUMINA BALLS
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    Biomedical applications
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    COMMERCIALLY PURE TITANIUMS
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    Corrosion behaviour
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    Corrosion potentials
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    CP TITANIUM
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    Function of time
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    In-vivo
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    RINGER'S SOLUTION
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    Surface modification
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    Thermal oxidation
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    THERMALLY OXIDIZED
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    Wear mechanisms
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    Anodic oxidation
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    Corrosion resistance
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    Corrosive effects
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    Medical applications
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    Titanium
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    TITANIUM METALLOGRAPHY
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    Tribology
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    Wear of materials
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    Titanium alloys