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Corrosion behavior of polypyrrole/hydroxyapatite nanocomposite thin films electropolymerized on NiTi substrates in simulated body fluid / M. Torabi in Materials and corrosion, Vol. 62 N° 3 (Mars 2011) 

Public ISBD [article]  in Materials and corrosion > Vol. 62 N° 3 (Mars 2011) . - pp. 252–257 Titre : Corrosion behavior of polypyrrole/hydroxyapatite nanocomposite thin films electropolymerized on NiTi substrates in simulated body fluid Type de document : texte imprimé Auteurs : M. Torabi, Auteur ; S. K. Sadrnezhaad, Auteur Année de publication : 2011 Article en page(s) : pp. 252–257 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Corrosion  Electrochemical  impedance  spectroscopy  Nanocomposite  Polypyrrole  Simulated  body  fluid Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Hydroxyapatite (HAp) nanoparticles synthesized via microwave irradiation. Polypyrrole (PPy)/HAp nanocomposite was obtained using electropolymerization on nitinol (Ni) titanium (Ti) substrates. Fourier transform infrared was employed to characterize the nanocomposite formation. Electrochemical properties of the nanocomposite were investigated using polarization and electrochemical impedance spectroscopy (EIS) in simulated body fluid (SBF, 37 ± 0.1 °C). It was concluded that the NiTi specimen coated with PPy/HAp nanocomposite, has higher corrosion resistance than the NiTi coated with pure PPy in the SBF; however, NiTi was better than both coated NiTi. EIS results confirmed corrosion properties. Also, EIS was used to predict the morphology of the coatings. It predicted fine and compact morphology of the nanocomposite that was confirmed using scanning electron microscopy. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905399/abstract [article] Corrosion behavior of polypyrrole/hydroxyapatite nanocomposite thin films electropolymerized on NiTi substrates in simulated body fluid [texte imprimé] / M. Torabi, Auteur ; S. K. Sadrnezhaad, Auteur . - 2011 . - pp. 252–257. Génie Mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 62 N° 3 (Mars 2011) . - pp. 252–257 Mots-clés : Corrosion  Electrochemical  impedance  spectroscopy  Nanocomposite  Polypyrrole  Simulated  body  fluid Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Hydroxyapatite (HAp) nanoparticles synthesized via microwave irradiation. Polypyrrole (PPy)/HAp nanocomposite was obtained using electropolymerization on nitinol (Ni) titanium (Ti) substrates. Fourier transform infrared was employed to characterize the nanocomposite formation. Electrochemical properties of the nanocomposite were investigated using polarization and electrochemical impedance spectroscopy (EIS) in simulated body fluid (SBF, 37 ± 0.1 °C). It was concluded that the NiTi specimen coated with PPy/HAp nanocomposite, has higher corrosion resistance than the NiTi coated with pure PPy in the SBF; however, NiTi was better than both coated NiTi. EIS results confirmed corrosion properties. Also, EIS was used to predict the morphology of the coatings. It predicted fine and compact morphology of the nanocomposite that was confirmed using scanning electron microscopy. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905399/abstract