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Calcium and titanium release in simulated body fluid from plasma electrolytically oxidized titanium

  • Y. Zhang
  • E. Matykina
  • P. Skeldon
  • G. E. Thompson
Article

Abstract

The release of titanium and calcium species to a simulated body fluid (SBF) at 37°C has been investigated for titanium treated by dc plasma electrolytic oxidation (PEO) in three different electrolytes, namely phosphate, silicate and calcium- and phosphorus-containing. The average rate of release of titanium over a 30 day period in immersion tests, determined by solution analysis, was in the range ~1.5–2.0 pg cm−2 s−1. Calcium was released at an average rate of ~11 pg cm−2 s−1. The passive current densities, determined from potentiodynamic polarization measurements, suggested titanium losses of a similar order to those determined from immersion tests. However, the possibility of film formation does not allow for discrimination between the metal releases due to electrochemical oxidation of titanium and chemical dissolution of the coating.

Keywords

Saturated Calomel Electrode Simulated Body Fluid Oxygen Reduction Reaction Inductive Couple Plasma Optical Emission Spectroscopy Immersion Test 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Y. Zhang
    • 1
  • E. Matykina
    • 1
  • P. Skeldon
    • 1
  • G. E. Thompson
    • 1
  1. 1.Corrosion and Protection Centre, School of MaterialsThe University of ManchesterManchesterUK

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