Issue 2, 2018

Wear and corrosion resistance of Co–P coatings: the effects of current modes

Abstract

In this work, Co–P coatings were deposited from a chloride-based bath by direct current (DC), pulse current (PC) and pulse reverse current (PRC) methods, respectively. The effects of current modes on the microstructure, composition, microhardness, wear resistance and corrosion resistance of the Co–P coatings were explored. Results showed that the P content in the Co–P coatings increased and the surface roughness decreased in the sequence of DC, PC and PRC methods. The coatings with low P content deposited by DC and PC methods are crystalline with fcc and hcp structures, respectively, while the coating with high P content deposited by the PRC method is amorphous. Comparing to DC and PC methods, the PRC method can evidently improve the microhardness, wear resistance and corrosion resistance of Co–P coatings. The excellent wear and corrosion resistance of the Co–P coatings deposited by the PRC method could be attributed to its high P content, smooth surface and amorphous structure.

Graphical abstract: Wear and corrosion resistance of Co–P coatings: the effects of current modes

Article information

Article type
Paper
Submitted
30 Sep 2017
Accepted
20 Dec 2017
First published
03 Jan 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 895-903

Wear and corrosion resistance of Co–P coatings: the effects of current modes

R. Li, Y. Hou, Q. Dong, P. Su, P. Ju and J. Liang, RSC Adv., 2018, 8, 895 DOI: 10.1039/C7RA10830C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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