Preparation and Properties of Cathodic Plasma Electrolysis Ni-P Coatings

Abstract:

Cathodic plasma electrolysis (CPE) is an emerging surface engineering technology in the recent years. In present work CPE was successfully used for deposition Ni-P coatings on carbon steel. The deposition experimental results show that CPE possesses high coating deposition rate, faster than 4 μm/min. SEM observations unveil the bonding between Ni-P coating and substrate is metallurgical. XRD diagram analysis indicates that the phases of as-deposited Ni-P coating are Ni and Ni3P, transformed from amorphous to crystallized state. The corrosion resistances of CPE and electroless plating (EP) coating have also been discussed by polarization curves in 3.5% NaCl solution at room temperature. Scratch tester was applied to study film-substrate adhesion of CPE Ni-P coating comparing with EP Ni-P coating.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 2984-2988
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.2984
• Online since: January 2013
• Authors: Peng Zhang, De Ren Wang, Ye Dong He
• Keywords: Cathodic Plasma Electrolysis, Corrosion Resistance, Metallurgical Bonding, Ni-P Coating

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