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Morphology Change of Electrodeposited Calcium Phosphate Coating on Ti6Al4V Substrate Under High Magnetic Field

Journal of Iron and Steel Research International 2012年第S2期19卷 1162-1165页

作者： DALTIN Anne-Lise BAUDART Patrick DEBRAY Francois CHOPART Jean-Paul LISM URCAB.P.103951687 Reims Cedex 2France LNCMI-CNRS-UJF-UPS-INSA B.P.16638042 Grenoble Cedex 9France

The present study reports on the growth of calcium phosphate coatings on Ti6Al4V substrate by electrodeposition under high magnetic *** electrodeposition is conducted by potentiostatic method on horizontal electrode whose roughness was modified to reach a value of 3μ*** coatings are obtained from an electrolyte containing calcium nitrate as the Ca^(2+) source and ammonium phosphate as the P source with a Ca/P ratio equal to *** LNCMI high field continuous magnet in a 170 mm bore with homogeneity of 600.10~6 in I cm^3 has been *** magnetic field with a magnitude up to 12 T is applied perpendicularly to the electrode *** surface morphology and chemical composition of the obtained coatings were characterized by 3D digital microscope and scanning electron microscopy associated with X-ray microanalysis(SEM-EDX).The phase composition was analyzed by X-Ray *** presence of several crystalline phases comprising octacalcium phosphate and hydroxyapatite is obtained and magnetic field seems to change the relative importance of these *** coating morphology changes from belt shape crystallites to needle shape crystallites with high magnetic field superimposition without important modification of Ca/P ratio in the *** the other hand formation of volcano-like structures due to the presence of hydrogen bubbles during deposition is considerably reduced in the presence of magnetic field.

关键词： biomaterials calcium phosphates electrodeposition magnetic field magnetoelectrolysis MHD effect

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