Journal
RSC ADVANCES
Volume 8, Issue 2, Pages 895-903Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra10830c
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Funding
- Science and Technology Commission of Shanghai Municipality [16QB1401100, 15QB1401500]
- open foundation of Anhui province key laboratory of advanced building materials of Anhui Jianzhu University [JZCL201605KF]
- Fuyang government - Fuyang normal university horizontal scientific research [XDHX2016028]
- Doctoral Foundation of Fuyang Normal University [204009154]
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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.
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