| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Two-step Electrochemical Composite Deposition on the Coating Structure and Friction Bearing Capacity of Ni-MoS2 Composite Coatings |
| CHENG Qian1, YAO Zhengjun1,2, ZHANG Fan1, NIU Yongkang1
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1 College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2 Key Laboratory of Materials Preparation and Protection for Harsh Environment, Ministry of Industry and Information Technology, Nanjing 211106, China |
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Abstract Due to the high porosity of Ni-MoS2 composite coatings caused by the preferential deposition of MoS2 particles, the two-step electrochemical composite deposition was employed to repair the deposition deficiency of Ni-MoS2 coatings. The results demonstrated that the second nickel plating transforms the dendrite feature of Ni-MoS2 coatings into the nodular characteristics of Ni-MoS2+Ni coatings. Contrary to the loose Ni-MoS2 coatings, the densification of Ni-MoS2+Ni coatings got increased, with fewer deposition defects observed. The microhardness of Ni-MoS2+Ni coatings (282.0HV0.1) was approximately twice as much as that of Ni-MoS2 coatings (130.7HV0.1). Abundant nickel element was introduced to the loose MoS2+Ni coatings after the second nickel deposition, for the repairment of its deposition defects and the reinforcement of its porous structure. Therefore, Ni-MoS2+Ni coatings could preserve excellent antifriction and carry greater wear load for a longer time.
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Published: 02 December 2020
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| Fund:(Supplementary Information)This work was supported by Open Fund of Key Laboratory of Material Preparation and Protection for Harsh Environment (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology (56XCA17006), the Innovation Fund of NUAA (Nanjing University of Aeronautics and Astronautics)(kfjj20180602). |
| About author:: Qian Chengis studying at Nanjing University of Aeronautics and Astronautics and is pursuing her master's degree. She majors in the preparation and property research of metal protective coatingsZhengjun Yao,received his Ph.D. degree in Mechanical Engineering and Automation Engineering from Nanjing University of Aeronautics and Astronautics in 2004. He is currently a professor and Ph.D tutor in the College of Material Science and Technology and participates in the development of material surface enginee-ring, high-performance metal materials, structural functional polymer composite materials, titanium alloy 3D printing and other fields. |
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Elianov O, Garusi S, Rosentsveig R, et al. Surface and Coatings Technology, 2018, 353,116.2 Walsh F C, Ponce de Leon C. The International Journal of Surface Engineering and Coatings, 2014, 92(2),83.3 Meng F, Han H, Gao X, et al. Tribology International, 2018, 118,400.4 Du S, Li Z, He Z, et al. Tribology International, 2018, 128,197.5 He Y, Wang S C, Walsh F C, et al. Surface and Coatings Technology, 2016, 307,926.6 Lampke T, Wielage B, Dietrich D, et al. Applied Surface Science, 2006, 253(5),2399.7 Huang Z J, Xiong D S. Surface and Coatings Technology, 2008, 202(14),3208.8 Cardinal M F, Castro P A, Baxi J, et al. Surface and Coatings Technology, 2009, 204(1-2),85.9 Zou T Z, Tu J P, Zhang S C. Materials Science and Engineering: A, 2006, 426(1-2),162.10 Li J L, Xiong D S, Huo M F, et al. Wear, 2008, 265(3-4),566.11 Liu X, Shi X, Wu C, et al. Materials Chemistry and Physics, 2017, 198,145.12 García-Lecina E, García-Urrutia I, Díez J A, et al. Electrochimica Acta, 2013, 114,859.13 García-Lecina E, García-Urrutia I, Díez J A, et al. Surface and Coatings Technology, 2012, 206(11-12),2998.14 Lekka M, Zanella C, Klorikowska A, et al. Electrochimica Acta, 2010, 55(27),7876.15 Bülbül F, Efeogˇlu I·. Crystallography Reports, 2010, 55(7),1177.16 Arslan E, Bülbül F, Alsaran A, et al. Wear, 2005, 259(7-12),814.17 Wang L M. Journal of Applied Electrochemistry, 2008, 38(2),245.18 Ma C, Yu W, Jiang M, et al. Ceramics International, 2018, 44(5),5163.19 Zhang Y, Epshteyn Y, Chromik R R. Tribology International, 2018, 123,296.20 Wu Yunxin. Wear, 1997,205, 64.
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2020, Vol. 34 
