The Additions of V and Cu on the Microstructure and Mechanical Properties of Mo-N Coatings

Mei, Haijuan1; Cai, Zhenhao1; Ding, Jicheng2; Yan, Kai3; Li, Qiuguo1; Zhao, Zhenting1; Zhao, Junfeng1; Cheng, Lixia1; Liu, Min1; Gong, Weiping1

2022-08-01

10.3390/coatings12081129

COATINGS   Impact Factor & Quartile

2079-6412

Due to the excellent lubricity of V2O5 and soft metals, V and Cu have been added to Mo-N based coatings to further improve the tribological properties. In this study, the Mo-V-Cu-N coatings were deposited by high power impulse magnetron sputtering (HIPIMS). The effects of V and Cu on the microstructure and mechanical properties of Mo-N coatings were investigated. With increasing V/Cu content ratio, the deposition rate decreased from 15.4 to 6.5 nm/min, and the microstructure transformed from a featureless structure into a dense columnar structure. At low Cu contents, less than 6.5 at.%, the Mo-V-Cu-N coatings exhibited a single solid solution phase of c-Mo-2(V)N. When the Cu content reached 29.7 at.%, the Mo45V1Cu30N24 coating showed the lowest surface roughness of 2.0 nm, and the coating changed into a double-phase of c-Mo-2(V)N and c-Cu. The adhesion strength gradually increased from 32.2 to 87.8 N with an increasing V/Cu content ratio. Due to the microstructure densification, a maximum hardness of 27.3 GPa was achieved for the Mo46V15Cu1N38 coating, which was accompanied by a high compressive residual stress.

Mo-V-Cu-N microstructure surface roughness mechanical properties

SCI

English

Others

National Natural Science Foundation of China[51672100] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515110016] ; International Science and Technology Cooperation Project of Guangdong Province[2019A050510049] ; Professorial and Doctoral Scientific Research Foundation of Huizhou University[2020JB010] ; Indigenous Innovation's Capability Development Program of Huizhou University[HZU202005] ; Provincial College Students Innovation Training Program[S202110577037]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied

WOS:000846132500001

MDPI

Web of Science

1.Huizhou Univ, Guangdong Prov Key Lab Elect Funct Mat & Devices, Huizhou 516007, Peoples R China
2.Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518000, Peoples R China

Mei, Haijuan,Cai, Zhenhao,Ding, Jicheng,et al. The Additions of V and Cu on the Microstructure and Mechanical Properties of Mo-N Coatings[J]. COATINGS,2022,12(8).

Mei, Haijuan.,Cai, Zhenhao.,Ding, Jicheng.,Yan, Kai.,Li, Qiuguo.,...&Gong, Weiping.(2022).The Additions of V and Cu on the Microstructure and Mechanical Properties of Mo-N Coatings.COATINGS,12(8).

Mei, Haijuan,et al."The Additions of V and Cu on the Microstructure and Mechanical Properties of Mo-N Coatings".COATINGS 12.8(2022).