resumo
This paper reports a successful electrodeposition method for coating hydroxyapatite (HAP) onto surgical grade stainless steel (SS). Pure HAP coatings could be achieved at -1400 mV vs SCE and the coating resistivity was assessed by potentiodynamic polarization and impedance techniques which showed that HAP coatings deposited onto the borate passivated-SS specimens possess maximum bioresistivity in Ringer's solution. The coatings were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Atomic force microscopy (AFM). The results have showed that the borate passivation followed by HAP coating performed on 316L SS could enhance the longevity of the alloy in Ringer's solution. (C) 2011 Elsevier Ltd. All rights reserved.
palavras-chave
SIMULATED BODY-FLUID; SOL-GEL; COMPOSITE COATINGS; 316L SS; TITANIUM; CORROSION; APATITE
categoria
Materials Science; Metallurgy & Metallurgical Engineering
autores
Gopi, D; Prakash, VCA; Kavitha, L; Kannan, S; Bhalaji, PR; Shinyjoy, E; Ferreira, JMF
nossos autores
José Maria da Fonte Ferreira
Professor(a) Jubilado(a)agradecimentos
One of the authors D. Gopi thanks to the Department of Science and Technology (DST), the Indian Council of Medical Research (ICMR) and Tamilnadu State Council for Science and Technology (TNSCST), India in the form of major research projects. V.C.A Prakash expresses his sincere thanks to Council for Scientific and Industrial Research (CSIR), New Delhi, India for the financial assistance (CSIR-SRF). Also L. Kavitha acknowledges the financial support from ICTP, Italy in the form of Junior Associateship. The support from CICECO, University of Aveiro, Portugal, is also acknowledged.