Ultrasonic-assisted Ni–Mo–P doping hydrothermal synthesis of clustered spherical MoS2 composite coating: wear and corrosion resistance. (2nd August 2020)

• Record Type: Journal Article
• Authors: Jiang, Jibo; Sun, Yaoxin; Chen, Yukai; Zhou, Qiongyu; Rong, Haibo; Hu, Xiaomin; Chen, Haotian; Zhu, Liying; Han, Sheng
• Is Part Of: Surface engineering. Volume 36:Number 8(2020)
• Page Start: 889
• Page End: 899
• Publication Date: 2020-08-02
• Subjects: Ultrasonic field -- corrosion resistance -- composite coating -- wear; Surfaces (Technology) -- Periodicals; Coatings -- Periodicals; 620.4405
• DOI: 10.1080/02670844.2020.1726012
• Languages: English
• ISSNs: 0267-0844

Abstract

ABSTRACT: In this study, MoS2 particle and ultrasonic field (UF) were successfully employed to produce Ni–Mo–P, Ni–Mo–P/MoS2 and UF–Ni–Mo–P/MoS2 electroless composite coatings on Q235 mild steel. The surface microscopic, microstructures and roughness of the coating were studied using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), atomic force microscope (AFM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The corrosion resistance was analysed by Tafel plots and by electrochemical impedance spectroscopy (EIS). The results indicated that compared to a pure Ni–Mo–P coating, the UF–Ni–Mo–P/MoS2 composite coating exhibited better corrosion resistance. The friction tests showed that MoS2 particle enhanced the wear resistance of the composite coating. The potential mechanism was that ultrasonic field suppressed the hydrogen gas occlusion and brought about a uniform and dense surface.