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Titre :
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Improving the protective properties of La-conversion coating on α-brass surface by the combined use of La2O3 nanoparticles incorporation and electrodeposition (2012)
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Auteurs :
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H. Q. Fan, Auteur ;
S. Y. Li, Auteur ;
Z. C. Zhao, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Materials and corrosion (Vol. 62 N° 12, Décembre 2011)
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Article en page(s) :
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pp. 1133–1140
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Note générale :
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Génie Mécanique
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Langues :
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Anglais
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Index. décimale :
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620.1 (Essais des matériaux. Défauts des matériaux. Protection des matériaux)
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Tags :
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Brass Conversion coating Electrodeposition Lanthanum Nanoparticles
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Résumé :
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The La2O3 nanoparticles incorporation and electrodeposition were used together to prepare the La-conversion coatings on α-brass surface in a basal solution containing rare earth salt. The results showed that both techniques can improve the protective properties of coatings. A ‘critical nano-La2O3 content’ and a ‘critical deposition potential’ were observed, under which the conversion coatings had the highest protective properties. Increased electrodeposition time improve the quality of conversion coatings. The La-conversion coatings could provide important protection against α-brass corrosion for considerable immersion periods in 3.5 wt% sodium chloride solution because it ennobled the corrosion potential and decreased the anodic current.
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DEWEY :
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620.1
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ISSN :
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0947-5117
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En ligne :
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http://onlinelibrary.wiley.com/doi/10.1002/maco.201106231/abstract
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