MICROSTRUCTURE AND PROPERTIES OF THE Ni-TiN NANOCOATINGS PREPARED BY COMPUTER-CONTROLLED PULSED ELECTRODEPOSITION TECHNIQUE

Xingyuan Li, Chunyang Ma () and Fafeng Xia
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Xingyuan Li: College of Information Engineering, Ningbo Dahongying University, Ningbo 315175, P. R. China
Chunyang Ma: #x2020;School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, P. R. China
Fafeng Xia: #x2020;School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, P. R. China

Surface Review and Letters (SRL), 2018, vol. 25, issue 06, 1-7

Abstract: This paper discusses the synthesis and characterization of Ni-TiN nanocoatings prepared by computer-controlled pulsed electrodeposition method. The influence of plating parameters on the microstructure, microhardness, and properties of the coating was investigated using transmission electron microscopy, atomic force microscopy, X-ray diffraction spectroscopy, scanning electron microscopy, and friction wear testing technique. The results showed that the Ni-TiN nanocoating synthesized at 4A/dm2 current density exhibited an optimum microhardness and TiN content of 984.7HV and 8.69wt.%, respectively. Ni-TiN nanocoatings prepared at different pulse frequencies grew as face-centered cubic structures along different directions, and average grain diameters of Ni and TiN in the nanocoating prepared at 200Hz were 87.2 and 34.6nm, respectively. The nanocoating prepared at 20% duty cycle showed an optimum microhardness and average wear of 980HV and 7.56mg/mm2.

Keywords: Ni-TiN nanocoating; microstructure; microhardness; property; plating parameter (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1142/S0218625X19500021

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