Neutron diffraction study of nano-hydroxyapatite coatings on titanium substrates

Article type: Research Article

Authors: Jakani, S.^; | Mathon, M.-H. | Benmarouane, A. | Lodini, A.^;

Affiliations: Laboratoire d’Analyse des Contraintes Mécaniques (LRC-CEA-DSM E.A no 3304 associé CEA no DSM-05-34), Université Champagne Ardenne Reims, UFR Sciences, 51100 Reims, France | Laboratoire Léon Brillouin (CEA-CNRS), CEA Saclay, 91191 Gif-sur-Yvette, France

Note: [] Corresponding author. Email: [email protected]

Abstract: Nanosized hydroxyapatite (HAP Ca10(PO4)6(OH)2) powders were characterized before and after depositing on the (Ti–6Al–4V) substrate using neutron diffraction and scanning electron microscopy (SEM). The crystallite size of nano-hydroxyapatite powder is 90 nm. After depositing via plasma thermal spraying (PTS), followed by 2 h heat treatment to reduce the amorphous fraction, the deposited coating shows retension of the nanometre crystallite sizes (about 120 nm). The SEM observations reveal a spherical geometry of agglomerated particles.

Keywords: Hydroxyapatite, Coatings, Plasma thermal spraying, Neutron diffraction

DOI: 10.1080/10238160802401211

Journal: Journal of Neutron Research, vol. 15, no. 3, 4, pp. 225-229, 2007