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The surfactant addition effect in the elaboration of electrodepositated NiP-SiC composite coatings

Malfatti, Célia de Fraga and Veit, Hugo Marcelo and Menezes, Tiago Lemos and Zoppas Ferreira, Jane and Rodriguês, J.S. and Bonino, Jean-Pierre The surfactant addition effect in the elaboration of electrodepositated NiP-SiC composite coatings. (2007) Surface and Coatings Technology, 201 (14). 6318-6324. ISSN 0257-8972

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.surfcoat.2006.11.040


In this work, NiP-SiC composite coatings were prepared by electrodeposition from a plating bath containing NiSO4·6H2O; NiCl2·6H2O; H3PO3; H3PO4; Na2 SO4 and SiC particles (average diameter of 600 nm) in suspension. Anionic surfactant (SDS — sodium dodecyl sulfate, CH3 (CH2)11SO4Na) or cationic surfactant (CTAHS—cetyltrimethylammonium hidrogensulfate, C19H43NO4S) were also added to this suspension. The number of incorporated particles by area unit (αnp/A) was evaluated by image analysis of micrographs obtained by scanning electron microscopy SEM). It was observed that organic additive addition influences the incorporated SiC particles rate on the metallic matrix. Addition of organic additives such as SDS or CTAHS modifies the characteristic of suspensions. Depending on particle size organic additive addition can change the number of incorporated particles in deposits during growth of the matrix. Decrease of the incorporated particle amount with the increase of particle size was verified. The selective incorporation process is associated to the presence of organic additive and it was not dependent on surfactant charge.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Surface and Coatings Technology website : http://www.sciencedirect.com/science/journal/02578972
HAL Id:hal-00807804
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Centro Universitário Feevale (BRAZIL)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Universidade Federal do Rio Grande do Sul - UFRGS (BRAZIL)
Laboratory name:
Deposited On:05 Jun 2009 14:49

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