Documents disponibles écrits par cet auteur

Synthesis and mechanical properties of nickel-titania composite coatings / S. A. Lajevardi in Materials and corrosion, Vol. 62 N° 1 (Janvier 2011) 

Public ISBD [article]  in Materials and corrosion > Vol. 62 N° 1 (Janvier 2011) . - pp. 29–34 Titre : Synthesis and mechanical properties of nickel-titania composite coatings Type de document : texte imprimé Auteurs : S. A. Lajevardi, Auteur ; T. Shahrabi, Auteur ; V. Hasannaeimi, Auteur Année de publication : 2011 Article en page(s) : pp. 29–34 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Composite  coatings  Electrocodeposition  Nickel  Titania  particles  Ultrasonic  waves Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Nickel-titania composite coatings were prepared under direct current conditions by codeposition of nano titania particles (21 nm) and nickel from a nickel Watts type bath. Current density, concentration of titania particles, effect of agitation, and ultrasonic waves were investigated and the optimum values of these parameters for reaching to maximum vol% of titania particles in the coating were determined. Microhardness of these coatings was investigated by Vickers method and their morphological properties and chemical composition were studied by SEM and EDS analysis, respectively. The results showed that optimal values of current density, concentration of particles, and agitation rate exist that maximum percent of particles codeposited in the coating. Also it is demonstrated that using the ultrasonic waves dramatically decrease the agglomeration of particles in the coating. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905467/abstract [article] Synthesis and mechanical properties of nickel-titania composite coatings [texte imprimé] / S. A. Lajevardi, Auteur ; T. Shahrabi, Auteur ; V. Hasannaeimi, Auteur . - 2011 . - pp. 29–34. Génie Mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 62 N° 1 (Janvier 2011) . - pp. 29–34 Mots-clés : Composite  coatings  Electrocodeposition  Nickel  Titania  particles  Ultrasonic  waves Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Nickel-titania composite coatings were prepared under direct current conditions by codeposition of nano titania particles (21 nm) and nickel from a nickel Watts type bath. Current density, concentration of titania particles, effect of agitation, and ultrasonic waves were investigated and the optimum values of these parameters for reaching to maximum vol% of titania particles in the coating were determined. Microhardness of these coatings was investigated by Vickers method and their morphological properties and chemical composition were studied by SEM and EDS analysis, respectively. The results showed that optimal values of current density, concentration of particles, and agitation rate exist that maximum percent of particles codeposited in the coating. Also it is demonstrated that using the ultrasonic waves dramatically decrease the agglomeration of particles in the coating. DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905467/abstract