NDLI: Effect of nano-Al2O3 particles and of the Co concentration on the corrosion behavior of electrodeposited Ni

Content Provider	Springer Nature Link
Author	Cârâc, Geta Ispas, Adriana
Copyright Year	2012
Abstract	Incorporation of nano-Al2O3 particles into a Ni–Co alloy by electrodeposition influences the corrosion properties, morphology, and structure of the layers. The resistance against corrosion of Ni–Co/Al2O3 composite films deposited on stainless steel was investigated in a 0.1-M NaCl solution by potentiodynamic polarization. The presence of nanoparticles improves the corrosion resistance of Ni–Co/nano-Al2O3 deposits when compared to pure Ni–Co alloy. Moreover, by increasing the pH of the electrodeposition bath and the content of Co in the alloy, the resistance against corrosion is furthermore improved. The morphology of the deposits before and after their corrosion was analyzed by scanning electron microscopy. The presence of the embedded alumina particles in the Ni–Co alloys was one of the key factors that limited further propagation of corrosion on the metallic surface. Preferential corrosion attack, in the form of a pitting corrosion, was located mainly at the grain boundaries.
Starting Page	3457
Ending Page	3465
Page Count	9
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	16
Issue Number	11
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-10-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ni–Co alloys Alumina nanoparticles Potentiodynamic polarization Corrosion Electrodeposition Analytical Chemistry Condensed Matter Physics Characterization and Evaluation of Materials Electrochemistry Energy Storage Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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