Premium
Preparation and Properties of Ni–W Composite Coatings Reinforced by Graphene Nanoplatelets
Author(s) -
Cheng Desen,
Zhang Lan,
Zhan Zhuoyi,
Xia Huimin,
Ma Kaiqiang,
Ma Huizhong,
Gao Yuan
Publication year - 2021
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202001309
Subject(s) - materials science , corrosion , composite number , coating , indentation hardness , composite material , graphene , alloy , microstructure , grain size , metallurgy , nanotechnology
Metal enhancement is crucial for reducing energy use and material waste. Composite electrodeposition is an economic and efficient method for improving the surface properties of metals. Herein, Ni–W matrix composite coatings reinforced with graphene nanoplatelets (GNPs) are prepared on 7075 aluminum (Al) alloy plates by the co‐deposition technique. Characterization results reveal that the mechanical properties and corrosion resistance of the coating can be improved by the successful embedding of GNPs. The Ni–W/GNP coating exhibits rougher, cauliflower‐like morphology, higher microhardness (782.6 HV), lower wear rate (2.72 × 10 −5 mm 3 N −1 m −1 ), and better corrosion current density (18.19 μA cm −2 ) compared with the Ni–W coating (578.2 HV, 7.43 × 10 −5 mm 3 N −1 m −1 , and 25.16 μA cm −2 , respectively). Moreover, X‐ray diffraction (XRD) spectroscopy and analysis verify that the grain size is decreased for GNP‐reinforced composite coatings with a typical Ni‐based solid‐solution phase.