Defect Formation Mechanism and Performance Study of Laser Cladding Ni/Mo Composite Coating
Source abstract
Abstract
In order to improve the wear resistance of Cu, a Ni/Mo composite coating was applied on the surface of Cu alloy by means of laser cladding. The laser power was 6000 W, the scanning speed was 5 mm/s and the feed rate was 10 g/min. The transition layer of the Ni layer had three layers, and the surface layer of the Mo layer had two layers. The results showed that the surface of the cladding layer was pure Mo. Due to the fluidity and non-equilibrium solidification of Mo in the molten state, pores and cracks along the grain boundary were observed in the Mo layer. The results showed that the cross-section of cladding layer was divided into a pure Mo layer, Mo-Ni-Cu mixed layer and an Ni-Cu mixed layer. The surface hardness of the Mo layer was 200~460 HV. Ni3Mo was formed at the interface of Mo and Ni. The hardness was improved by Ni3Mo; the maximum hardness was 750 HV. Under the same load and wear time, the wear rate of Cu was three times that of the surface layer.
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Research context
OpenAlex topics: High Entropy Alloys Studies · Additive Manufacturing Materials and Processes · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Transportation Science and Engineering, Civil Aviation University of China, Tianjin 300300, China
Funding
National Natural Science Foundation of China
References (30)
Show source-provided references
1. Thinking and study of electromagnetic launch technology
2. Research progress on advanced rail materials for electromagnetic railgun technology10.1016/j.dt.2020.03.014 ↗
3. Cyanide-free silver electroplating process in thiosulfate bath and microstructure analysis of Ag coatings10.1016/S1003-6326(13)62935-0 ↗
4. Preparation and high temperature tribological properties of laser in-situ synthesized self-lubricating composite coatings containing metal sulfides on Ti6Al4V alloy10.1016/j.apsusc.2019.03.092 ↗
5. Development and characterization of laser clad high temperature self-lubricating wear resistant composite coatings on Ti-6Al-4V alloy10.1016/j.matdes.2013.09.038 ↗
6. Microstructure and wear behaviors of laser clad Ni/Cr3C2-WS2 high temperature self-lubricant wear-resistant composite coating10.1016/j.apsusc.2011.12.021 ↗
7. Failure mechanism of railways for H62 brass electromagnetic gun
8. Preparation of Co-Ni-Cu gradient coatings by CO2 laser cladding on Cu plate
9. Performance of novel metal/ceramic coating on the surface of Cu alloy
10. Effect of adding trace Cr Al Sn and Ni on the properties of Cu alloy
11. Microstructure and tribological properties of Ni-based claddings on Cu substrates10.1016/S0043-1648(98)00347-0 ↗
12. Laser surface melting of a complex high alloy steel10.1016/j.matdes.2013.08.060 ↗
13. A physical modeling and predictive simulation of the laser cladding process
14. Particularly Selective Sintering of Metal Powders by Pulsed Laser Radiation10.4028/www.scientific.net/KEM.685.403 ↗
15. Effects of Ni25 transitional layer on microstructural evolution and wear property of laser clad composite coating on H13 tool steel10.1016/j.surfcoat.2020.126488 ↗
16. Binary alloy phase diagrams requiring further studies10.1007/BF02649400 ↗
17. Laser cladding of Cu with Mo for wear resistance enhancement in electrical contacts10.1016/j.apsusc.2007.01.086 ↗
18. Chun, S.-Y. (2021). Changes of Crystal Structure and Microstructure of MoN Coatings in Accordance with Inductively Coupled Plasma Power. J. Coat., 11.10.3390/coatings11111351 ↗
19. Do rotating magnetic fields unconditionally lead to grain refinement? A case study for directionally solidified Al-10wt%Cu alloys
20. Li, X.-Z. (2014). Ni-Cr-Mo and Ni-Mo Preparation and Properties of Cladding Layer. [Master’s Thesis, North China Electric Power University].
21. Zhang, Q. (2020). Study on Dendrite Turning Growth Behavior and Element Segregation Inhibition of IN718 Alloy by Laser Cladding. [Master’s Thesis, Zhejiang University of Technology].
22. Dendrite splitting and orientation Deflection during directionally solidified Mo0.2FeCoCrNi high entropy alloy
23. Feng, Y., Du, Z., and Hu, Z. (2021). Effect of Ni Addition on the Corrosion Resistance of NiTi Alloy Coatings on AISI 316L Substrate Prepared by Laser Cladding. J. Coat., 11.10.3390/coatings11091139 ↗
24. Abdullah. Effect of Ni content on stainless steel fabricated by laser melting deposition10.1016/j.optlastec.2017.11.032 ↗
25. Tribological properties of Ni-base alloy composite coating modified by both graphite and TiC particles10.1016/S1003-6326(11)61031-5 ↗
26. Yan, H. (2010). Study on Laser Composite Wear Resistant Layer and Interface Characteristics of Cu Alloy. [Ph.D. Thesis, Huazhong University of Science and Technology].
27. Investigation of laser cladding high temperature anti-wear composite coatings on Ti6Al4V alloy with the addition of self-lubricant CaF210.1016/j.apsusc.2014.05.196 ↗
28. Friction and wear behavior of tin films against ceramic and steel balls10.1016/j.triboint.2018.03.031 ↗
29. Microstructure of laser-clad Ni60 cladding layers added with different amounts of rare-earth oxides on 6063 Al alloys10.1016/j.jallcom.2018.01.061 ↗
30. Effects of CeO2 on microstructure and properties of TiC/Ti 2 Ni reinforced Ti-based laser cladding composite coatings10.1016/j.optlaseng.2019.03.001 ↗