Effect of Ni/MoS2 Addition on Microstructure and Properties of Supersonic Plasma-Sprayed Ni-Based Composite Coatings

Authors

  • Xinsheng WANG Zhengzhou University of Light Industry / Henan Engineering Research Center of New Energy Vehicle Light Weight Design and Manufacturing https://orcid.org/0000-0002-8246-1833
  • Wenbin HE Zhengzhou University of Light Industry
  • Junjian HOU Zhengzhou University of Light Industry
  • Kun LIU Zhengzhou University of Light Industry
  • Xihao YAN Zhengzhou University of Light Industry

DOI:

https://doi.org/10.5755/j02.ms.29299

Keywords:

supersonic plasma technology, Ni coating, hardness, fatigue properties, friction, wear

Abstract

Abnormal tool wear is a significant problem encountered in machining. MoS2 has the function of friction reduction; thus, to mitigate friction, two Ni-based coatings, Ni60 and Ni60 + 15 wt.% Ni/MoS2, were obtained on tungsten steel using supersonic plasma technology. The microstructure, phase structure, microhardness, fatigue properties, and friction and wear properties of the two coatings were characterized. The results show that the two plasma-sprayed Ni-based coatings have desirable structures. The addition of Ni-coated MoS2 can effectively improve the hardness of the coatings, with values reaching as high as 735 HV. The speed of rotation of the friction ball was set as 200 r/min, and the cutting force was 201.6 N. The fatigue performance as well as the friction and wear performance of the coating are simulated using ANSYS. The fatigue performance is improved by 12.6 % after adding 15 wt.% Ni/MoS2, and the friction system of the coating becomes stable after 25 min of contact. The addition of 15 wt.% Ni/MoS2 can effectively improve the performance of the tool material.

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Published

2021-10-13

Issue

Section

Articles