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Structure, morphology and mechanical properties of electrodeposited composite coatings Ni–P/SiC

Alexis, Joël and Etcheverry, Bernard and Béguin, Jean-Denis and Bonino, Jean-Pierre Structure, morphology and mechanical properties of electrodeposited composite coatings Ni–P/SiC. (2010) Materials Chemistry and Physics, vol. 120 (n° 2-3). pp. 244-250. ISSN 0254-0584

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Official URL: http://dx.doi.org/10.1016/j.matchemphys.2009.12.013

Abstract

Physical properties of the NiP/SiC deposits are discussed according to the electroplating parameters and heat treatments. The insertion of silicon carbide in the coatings does not modify their rigidity (E = 230 GPa), increases their hardness slightly (50 Vickers) and decreases the residual stresses in the coatings. The phosphorus content has a major effect on the structure and the physical properties. Indeed, the insertion of phosphorus into the deposits generates a grain size reduction or even an amorphisation which results in morphological modifications observed by AFM. In parallel a very important hardening is associated with incorporation of phosphorus: hardness is multiplied by 3 to reach 600 HV0.1. The deposits tend to become crystalline following the heat treatments. With 420 °C, the precipitation of a Ni3P phase which distorts the crystal lattice is observed, increasing the hardness of the deposits.

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 Materials Chemistry and Physics website : http://www.sciencedirect.com/science/journal/02540584
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By:Joël ALEXIS

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