title: Micrometer level structural and chemical evaluation of electrodeposited calcium phosphate coatings on TA6V substrate by STEM-EDXS.
abstract: Hydroxyapatite (HA) coatings on titanium alloy substrates Ti6Al4V have been prepared in our laboratory by electrodeposition and hydrothermal synthesis. In this paper, the morphology, crystal size, porosity and Ca/P atomic ratio are investigated using scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), Raman microspectroscopy and X-ray energy dispersive spectroscopy (EDXS). The results obtained show that after being hydrothermally treated and calcined at high temperature, the electrodeposited brushite coating is converted into a stoichiometric hydroxyapatite having a crystal size which changes considerably from the surface to the substrate alloy. In addition, variation of the surface coating porosity as a function of the electrolyte temperature has also been carried out.
authors.affiliation: INSERM-ERM 0203, Laboratoire de Microscopie Electronique, 21, rue Clément Ader, 51685 Reims BP 138 Cedex 02, France.
authors.forename: H
authors.initials: H
authors.lastname: Benhayoune
authors.forename: P
authors.initials: P
authors.lastname: Laquerriere
authors.forename: E
authors.initials: E
authors.lastname: Jallot
authors.forename: A
authors.initials: A
authors.lastname: Perchet
authors.forename: L
authors.initials: L
authors.lastname: Kilian
authors.forename: G
authors.initials: G
authors.lastname: Balossier
authors.forename: J L
authors.initials: JL
authors.lastname: Bubendorff
authors.forename: G D
authors.initials: GD
authors.lastname: Sockalingum