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Corrosion behavior of nanostructured Ni-Si3N4 composite films / J. M. Li in Materials and corrosion, Vol. 63 N° 7 (Juillet 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 7 (Juillet 2012) . - pp. 620–626 Titre : Corrosion behavior of nanostructured Ni-Si3N4 composite films : a study of electrochemical impedance spectroscopy Type de document : texte imprimé Auteurs : J. M. Li, Auteur ; J. Y. Yin, Auteur ; C. Cai, Auteur Année de publication : 2012 Article en page(s) : pp. 620–626 Langues : Anglais (eng) Mots-clés : Corrosion;  electrochemical  impedance  spectroscopy;  Ni-Si3N4  nanocomposite  film Résumé : Ni-Si3N4 nanocomposite films with both the consecutive Ni crystallites and dispersed Si3N4 particles in the nanometer range have been fabricated using DC electroplating technique, and characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). The corrosion resistance of the Ni-Si3N4 nanocomposite film has been compared to that of pure Ni coating through polarization. Meanwhile, the corrosion process of Ni-Si3N4 nanocomposite film in neutral 3.5% NaCl solution has been investigated using electrochemical impedance spectroscopy (EIS). The results show that the Ni-Si3N4 nanocomposite film is more resistant to corrosion than the pure Ni coating. The corrosion of Ni-Si3N4 nanocomposite film is controlled by electrochemical step, and the whole corrosion process is divided into two sequential stages. The main corrosion type of Ni-Si3N4 nanocomposite films in neutral 3.5% NaCl solution is pitting. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005970/abstract [article] Corrosion behavior of nanostructured Ni-Si3N4 composite films : a study of electrochemical impedance spectroscopy [texte imprimé] / J. M. Li, Auteur ; J. Y. Yin, Auteur ; C. Cai, Auteur . - 2012 . - pp. 620–626. Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 7 (Juillet 2012) . - pp. 620–626 Mots-clés : Corrosion;  electrochemical  impedance  spectroscopy;  Ni-Si3N4  nanocomposite  film Résumé : Ni-Si3N4 nanocomposite films with both the consecutive Ni crystallites and dispersed Si3N4 particles in the nanometer range have been fabricated using DC electroplating technique, and characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). The corrosion resistance of the Ni-Si3N4 nanocomposite film has been compared to that of pure Ni coating through polarization. Meanwhile, the corrosion process of Ni-Si3N4 nanocomposite film in neutral 3.5% NaCl solution has been investigated using electrochemical impedance spectroscopy (EIS). The results show that the Ni-Si3N4 nanocomposite film is more resistant to corrosion than the pure Ni coating. The corrosion of Ni-Si3N4 nanocomposite film is controlled by electrochemical step, and the whole corrosion process is divided into two sequential stages. The main corrosion type of Ni-Si3N4 nanocomposite films in neutral 3.5% NaCl solution is pitting. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005970/abstract