TEM-cross section analysis of chemically pre-treated and biomimetically coated titanium EGLE CONFORTO, CCA/ULR F-17071 La Rochelle CEDEX 9, France; egle.conforto@univ-lr.fr DANIEL CAILLARD, CEMES-CNRS, BP94347, 31055 Toulouse Cedex France caillard@cemes.fr FRANK MULLER and LENKA MULLER, DMSB, University of Erlangen- Nurnberg, 91052 Erlangen, Germany Preferential growth direction of HA 1) After acid etching only: - Rough surface - Ti-hydride layer several microns thick See Conforto et al, Phil. Mag. 84, 631-645, 2004 and Mater. Sci. and Eng. C24, 611-618, 2004 2) After NaOH soaking: 3) After NaOH + SBF soaking: TEM cross-section and diffraction patterns Diffraction pattern of HA Conclusions: - biomimetic HA layer, with preferential growth direction perpendicular to the surface - good anchoring of HA on Ca-titanate, Ca-titanate on hydride layer, and hydride layer on Ti substrate (no crack, no delamination) - possibility of investigating other structures with the same method! Preferential growth direction of HA SEM image and chemical analysis of HA SEM image and chemical analysis TEM cross-section High magnification view and diffraction pattern of monoclinic sodium titanate SEM image of rough hydride layer SEM image and chemical analysis of calcium titanate Steps for biomimetically growth: commercially pure Ti + 1) acid etching (HCl), 2) NaOH soaking, 3) SBF soaking First observations in TEM cross-section: detailed structure and composition as a function of deepth at the nanometric scale View publication stats View publication stats