NDLI: Synergy Between Corrosion and Wear of Electrodeposited Ni

Content Provider	Springer Nature Link
Author	Lee, Hung Bin
Copyright Year	2013
Abstract	In this study, a block-on-ring wear tester was employed to investigate the tribocorrosion behavior of the electrodeposited Ni–W coating. Columnar grains embedded with lamellar and nanocrystalline microstructure were found in the fabricated Ni–W coating. The passivation of the Ni–W alloy was observed in the potentiodynamic polarization curve measured in 5 wt% NaCl solution. The result showed that with the raise of the applied overpotential, both the wear rate and the surface W-content of the coating increased. On the contrary, the accompanying coefficient of friction decreased with the potential. Small pitting and cracking occurred on the tested specimen. This microcracking structure was also observed in the corroded zone of the Ni–W coating by using TEM microscopy. A further XPS analysis determined the corrosion film was composed of Ni(OH)$_{2}$, NiO, and WO$_{3}$ on the corroded surface. The formation of this porous corrosion film at high overpotential was found to cause an accelerated weight loss and thereby, the interaction between wear and corrosion, of the Ni–W coating under tribocorrosion.
Starting Page	407
Ending Page	419
Page Count	13
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	50
Issue Number	3
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2013-04-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Corrosion-wear Non-ferrous metals Electrochemistry Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films Theoretical and Applied Mechanics Physical Chemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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