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Article

Effect of Charge Voltage on the Microstructural, Mechanical, and Tribological Properties of Mo–Cu–V–N Nanocomposite Coatings

1
Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516007, China
2
School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, China
3
Materials and Engineering Research Institute, Sheffield Hallam University, Sheffield S1 1WB, UK
*
Authors to whom correspondence should be addressed.
Academic Editors: Cecilia Mortalò, Silvia Maria Deambrosis and Valentina Zin
Coatings 2021, 11(12), 1565; https://doi.org/10.3390/coatings11121565
Received: 21 November 2021 / Revised: 9 December 2021 / Accepted: 10 December 2021 / Published: 20 December 2021
(This article belongs to the Topic Inorganic Thin Film Materials)
As an important high-power impulse magnetron sputtering (HIPIMS) parameter, charge voltage has a significant influence on the microstructure and properties of hard coatings. In this work, the Mo–Cu–V–N coatings were prepared at various charge voltages using HIPIMS technique to study their mechanical and tribological properties. The microstructure was analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The mechanical and tribological properties were investigated by nano-indentation and ball-on-disc tribometer. The results revealed that all the coatings showed a solid-solution phase of B1-MoVN, the V atoms dissolved into face-centered cubic (FCC) B1-MoN lattice by partial substitution of Mo, and formed a solid-solution phase. Even at a high Cu content (~8.8 at. %), the Cu atoms existed as an amorphous phase. When the charge voltage increased, more energy was put into discharge, and the microstructure changed from coarse structure into dense columnar structure, resulting in the highest hardness of 28.2 GPa at 700 V. An excellent wear performance with low friction coefficient of 0.32 and wear rate of 6.3 × 10−17 m3/N·m was achieved at 750 V, and the wear mechanism was dominated by mild abrasive and tribo-oxidation wear. View Full-Text
Keywords: Mo–Cu–V–N; charge voltage; microstructure; mechanical properties Mo–Cu–V–N; charge voltage; microstructure; mechanical properties
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MDPI and ACS Style

Mei, H.; Ding, J.; Zhao, J.; Wang, T.; Huang, K.; Guo, Z.; Luo, Q.; Gong, W. Effect of Charge Voltage on the Microstructural, Mechanical, and Tribological Properties of Mo–Cu–V–N Nanocomposite Coatings. Coatings 2021, 11, 1565. https://doi.org/10.3390/coatings11121565

AMA Style

Mei H, Ding J, Zhao J, Wang T, Huang K, Guo Z, Luo Q, Gong W. Effect of Charge Voltage on the Microstructural, Mechanical, and Tribological Properties of Mo–Cu–V–N Nanocomposite Coatings. Coatings. 2021; 11(12):1565. https://doi.org/10.3390/coatings11121565

Chicago/Turabian Style

Mei, Haijuan, Jicheng Ding, Junfeng Zhao, Ting Wang, Kaijian Huang, Zhaohui Guo, Quanshun Luo, and Weiping Gong. 2021. "Effect of Charge Voltage on the Microstructural, Mechanical, and Tribological Properties of Mo–Cu–V–N Nanocomposite Coatings" Coatings 11, no. 12: 1565. https://doi.org/10.3390/coatings11121565

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