Electrodeposited anodic oxide coatings were produced on Ti-6Al-4V substrates using aqueous electrolytes containing dissolved calcium and phosphorus. Different coatings were produced by varying the time periods. The coatings were characterised by XRD technique and TEM. The coatings were exposed to Simulated Body Fluid (SBF). Electrochemical polarisation and ac impedance studies too were performed on the coatings in SBF. Pins were coated and run against wooden disc in pin-on-disc type of wear tests. Coatings produced from long time electrolysis showed very good resistance to the attack of SBF and less wear compared to those produced from short time exposure. © 2007 Springer Science+Business Media, LLC.

Suresh Krishnamoorthy Seshadri

Electrochemical corrosion

Electrodeposition

Substrates

Synthesis (chemical)

Titanium alloys

Wear of materials

ANODIC OXIDE COATINGS

AQUEOUS ELECTROLYTES

DISSOLVED CALCIUM

Simulated body fluid (SBF)

Coatings

Aluminum

calcium

Phosphorus

titanium

Vanadium

aqueous solution

article

body fluid

corrosion

Electrochemistry

Electrolysis

Impedance

material coating

priority journal

synthesis

Transmission electron microscopy

X ray diffraction

Body fluids

Coated Materials, Biocompatible

Humans

materials testing

Microscopy, Electron, Transmission

Surface Properties

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Journal of Materials Science: Materials in Medicine

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.

Materials Science and Engineering C

Surface modification of CP-Ti to improve the fretting-corrosion resistance: Thermal oxidation vs. anodizing

Anodic TiO coatings were produced on Ti-6Al-4V substrates using aqueous electrolytes containing dissolved calcium and phosphorus. Two baths containing Ca and P compounds, in the molar ratios 5 and 15 were used. Different coatings were produced by electrolysis for 3 and 10 h at a constant current density of 10 mA/cm2. X-ray diffraction and X-ray fluorescence were used to identify the phases and chemical composition respectively. Thickness of the coatings was measured using ellipsometry. Electrochemical polarization and AC impedance studies were performed on the coatings by exposing them to simulated body fluid (SBF) for a period of 1 week. The coating produced by 10-h electrolysis from bath of Ca/P ratio 15 showed low corrosion current and high impedance to the week-long attack of SBF. © 2007 Wiley Periodicals, Inc.

Journal of Biomedical Materials Research - Part A

Corrosion of anodic TiO coatings on Ti-6Al-4V in simulated body fluid

Biomaterials

Nanocrystalline hydroxyapatite coatings on titanium: a new fast biomimetic method

Vacuum

Influence of the Ca- and P-enriched oxide layers produced on titanium and the Ti6Al4V alloy by the IBAD method upon the corrosion resistance of these materials

Influence of abrasion on the surface characteristics of thermally sprayed hydroxyapatite coatings

Surface and Coatings Technology

Promoted calcium-phosphate precipitation from solution on titanium for improved biocompatibility by ion implantation

Journal of Biomedical Materials Research

Hydroxyapatite deposition by electrophoresis on titanium sheets with different surface finishing

Synthesis, corrosion and wear of anodic oxide coatings on Ti-6Al-4V

Journal	Journal of Materials Science: Materials in Medicine
ISSN	09574530
Open Access	No