Acta Metallurgica Sinica (English Letters) ›› 2020, Vol. 33 ›› Issue (4): 573-582.DOI: 10.1007/s40195-019-00996-y

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Electrodeposited Ni-W-TiC Composite Coatings: Effect of TiC Reinforcement on Microstructural and Tribological Properties

Jin Hyuk Choi1, Gobinda Gyawali2(), Dhani Ram Dhakal3, Bhupendra Joshi2, Soo Wohn Lee3   

  1. 1 Department of Materials Metal Engineering, Sun Moon University, 31460, Asan, South Korea
    2 Department of Fusion Science and Technology, Sun Moon University, Tangjeong Myeon, 31460, Asan, Chungnam, South Korea
    3 Department of Environmental and Bio-Chemical Engineering, Sun Moon University, 31460, Asan, South Korea
  • Received:2019-09-19 Revised:2019-11-01 Online:2020-04-10 Published:2020-04-15
  • Contact: Gobinda Gyawali ggobinda@sunmoon.ac.kr

Abstract:

Ni-W-TiC composite coatings were prepared via electrodeposition technique by dispersing the different amount of TiC particles into the plating bath. The Ni-W and Ni-W-TiC composite coatings containing different concentrations of TiC particles were characterized by using the scanning electron microscope, X-ray diffraction technique, Vickers microhardness test, surface roughness test, and tribology test. The results show that the Ni-W coatings containing reinforced TiC particles have shown a typical FCC Ni-W crystal structure with significantly higher Vickers microhardness. The amount of dispersed TiC particles into the plating bath considerably affected codeposition weight percent of TiC into the Ni-W matrix, as revealed by the EDS analysis. Ni-W-TiC samples demonstrated the decreased abrasive wear as compared to Ni-W coating and no characteristic features observed for the adhesive wear. Similarly, an improvement in coefficient of friction was observed in Ni-W-TiC composite coating as compared to Ni-W coating.

Key words: Ni-W alloy, Composite coating, Microhardness, Wear, Coefficient of friction