Preparation of Metal-Gr Composite Coatings via Electro-Plating for High Performances: A Review
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MRS Advances © 2019 Materials Research Society DOI: 10.1557/adv.2019.315
Preparation of Metal-Gr Composite Coatings via Electro-Plating for High Performances: A Review Sishi Li1, 2, Yanpeng Yang1, 2, Gongsheng Song1, 2, Qiang Fu2, Chunxu Pan1, 2* 1
Suzhou Institute of Wuhan University, Suzhou, 215123, China
2
School of Physics and Technology, and MOE Key Laboratory of Artificial Micro- and Nano-structures, Wuhan University, Wuhan 430072, China
ABSTRACT
Developing metal-based composite coatings with improved mechanical properties and good corrosion resistance has been an attractive research topic in recent years. Graphene (Gr), as a new type of two-dimensional (2D) carbon nanomaterial with excellent physical, chemical and mechanical properties, can be used as a reinforcement to improve hardness, tensile strength, wear and corrosion resistance of metal-based composites. There have been substantial efforts focused on the fabrication of metal-Gr composite coatings via various approaches. Electro-deposition is an effective electrochemical method with wide range of advantages, such as a fast deposition rate, simple set-up with large scale production and relatively low cost. This overview covers the previous research and development studies on metal-Gr composite coatings using electro-deposition method and the resulting properties. In addition, recent work in this area which provides a developed process with industrial production perspective, is discussed.
INTRODUCTION Electro-plating, which also known as electro-deposition, is a type of electrochemical process that the metal ions in the electrolyte solution are reduced into metal by applying external electric assistance, and deposited on the surface of the substrate to form a compact metal or alloy coating. In essence, it is an oxidationreduction chemical reaction, and electrons come from an external power supply. Electroplating as a practical coating preparation method with a broad range of benefits, has been
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also successfully used in the industrial applications such as mining equipment, machinery manufacturing and material repair. Regarding to the development of engineering applications, it is urgent to develop coating process with improved properties as well as long term durability. Due to the unique physical and chemical properties, and with the increasing availability of various nanoparticles. A number of metal-based composite coatings have been produced with different reinforcements, such as titanium dioxide (TiO2) [1], silicon oxide (SiO2) [2], tungsten carbide (WC) [3], carbon nanotubes (CNTs) [4] and graphene (Gr) [5]. The nanoparticles are added into the electrolyte bath and co-deposited with the matrix metals. The reinforcement phases provide the possibility to obtain the composite coatings with better performance t
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