A EFFECT OF CeO2 DOPING ON THE MICROSTRUCTURE AND CORROSION BEHAVIOR OF CoCuNiTi HIGH-ENTROPY ALLOY COATINGS
Keywords:
high-entropy alloy coating, CoCuNiTi, microstructure, corrosion behavior, laser cladding
Abstract
CoCuNiTi high-entropy alloy coatings with an equal molar ratio were prepared on 45 steel substrates using the laser-cladding method. The effect of CeO2 doping on phase structure, microstructure and corrosion behavior of CoCuNiTi coatings were investigated by X-ray diffraction, optical microscope, scanning electron microscope, and electrochemical workstation. The results show that the phase structure of CoCuNiTi coating doped with 1 w/% CeO2 is transformed from the original dual-phase structure of FCC main phase and BCC phase to the dual-phase structure of BCC main phase and FCC phase, mainly because CeO2 addition helps to improve the temperature gradient and solidification rate during solidification, reduce the nucleation resistance and the diffusion distance of the alloying elements, and provide a liquid environment with longer time, lower viscosity and higher diffusion rate. The microstructure of the two coatings is composed of BCC-phase dendrite and FCC-phase interdendrite. The widths of the primary dendrites of the columnar dendrites in CoCuNiTi cladding layer before and after CeO2 doping are about 8.10 µm and 6.51 µm, respectively. The CoCuNiTi coating doped with 1 w/% CeO2 has the smallest corrosion current density, the largest capacitive reactance arc radius and polarization resistance, and the best corrosion resistance in 3.5 w/% NaCl solution, which is mainly due to making the alloy structure refined and the element distribution uniform after the CeO2 addition.
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25 Q. Liu, X. Y. Wang, Y. B. Huang, L. Xie, Q. Xu, L. H. Li, Effect of molybdenum content on microstructure and corrosion resistance of CoCrFeNiMo high entropy alloy, Chin. J. Mater. Res., 34(2020) 11,70-76, doi:10.11901/1005.3093.2020.269
2 J. W. Yeh, S. K. Chen, S. J. Lin, J. Y. Gan, T. S. Chin, T. T. Shun, C. H. Tsau, S. Y. Chang, Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes, Adv. Eng. Mater., 6(2004) 5, 299-303, doi: 10.1002/adem.200300567
3 C. Zhang, J. Zhu, C. Ji, Y. Guo, R. Fang, S. Mei, S. Liu, Laser powder bed fusion of high-entropy alloy particle-reinforced stainless steel with enhanced strength, ductility, and corrosion resistance, Mater. Design, 209(2021).11, 109950, doi: 10.1016/j.matdes.2021.109950
4 M. Zhang, E. P. George, J. C. Gibeling, Tensile creep properties of a CrMnFeCoNi high-entropy alloy, Scripta Mater., 194(2021), 113633, doi: 10.1016/j.scriptamat.2020.113633
5 Z. He, N. Jia, H. Yan, Y. Shen, M. Zhu, X. Guan, X. Zhao, S. Jin, G. Sha, Y. Zhu, C. T. Liu, Multi-heterostructure and mechanical properties of N-doped FeMnCoCr high entropy alloy, Int. J. Plasticity, 139(2021), 102965. doi: 10.1016/j.ijplas.2021.102965
6 M. X. Ma, D. C. Zhu, Z. X. Wang, C. Liang, J. C. Zhou, D. L. Zhang, Microstructure and wear resistance of AlCoCrCuFe high-entropy alloy, Adv. Eng. Sci., 50(2018)4, 208-213, doi: 10.15961/j.jsuese.201701019
7 H. Wan, D. Song, X. Shi, Y. Cai, C. Chen, Corrosion behavior of Al0.4CoCu0.6NiSi0.2Ti0.25 high-entropy alloy coating via 3D printing laser cladding in a sulphur environment, J. Mater. Sci. Technol., 60(2021), 197-205, doi: 10.1016/j.jmst.2020.07.001
8 S. Zhang, B. Han, M. Li, Q. Zhang, Y. Wang, Investigation on solid particles erosion resistance of laser cladded CoCrFeNiTi high entropy alloy coating, Intermetallics, 131(2021), 107111, doi: 10.1016/j.intermet.2021.107111
9 Y. B. Peng, W. Zhang, T. C. Li, M. Y. Zhang, Y. Hu, Microstructures and mechanical properties of FeCoCrNi high entropy alloy/WC reinforcing particles composite coatings prepared by laser cladding and plasma cladding, Int. J. Refract. Met. H., 84(2019),105044, doi: 10.1016/j.ijrmhm.2019.105044
10 X. W. Qiu, M. J. Wu, C. G. Liu, Y. P. Zhang, C. X. Huang, Corrosion performance of Al2CrFeCoxCuNiTi high-entropy alloy coatings in acid liquids, J. Alloy. Compd., 708(2017), 353-357, doi: 10.1016/j.jallcom.2017.03.054
11 H. Zhang, Y. Pan, Y. Z. He, Synthesis and characterization of FeCoNiCrCu high-entropy alloy coating by laser cladding, Mater. Design, 32(2011)4, 1910-1915, doi: 10.1016/j.matdes.2010.12.001
12 R. Savinov, Y. Wang, J. Shi, Microstructure and properties of CeO2 doped CoCrFeMnNi high entropy alloy fabricated by laser metal deposition, J. Manuf. Process., 56(2020), 1245-1251, doi: 10.1016/j.jmapro.2020.04.018
13 M. X. Ma, Z. X. Wang, J. C. Zhou, C. Liang, D. L. Zhang, D.C. Zhu, Effect of CeO2 doping on phase structure and microstructure of AlCoCuFeMnNi alloy coating, Mater. Res, 22(2019) 1, e20180327, doi: 10.1590/1980-5373-mr-2018-0327
14 Y. S. Tian, C. Z. Chen, L. X. Chen, Q. H. Huo, Effect of RE oxides on the microstructure of the coatings fabricated on titanium alloys by laser alloying technique, Scripta Mater., 54 (2006)5, 847-852, doi: 10.1016/j.scriptamat.2005.11.011
15 M. X. Ma, Z. X. Wang, C. Liang, J. C. Zhou, D. L. Zhang, D. C. Zhu, Effect of CeO2 doping on microstructure, friction and wear properties of AlCoCrCuFe high-entropy alloys, J. Mater. Eng., 47(2019), 106-111, doi: 10.11868/j.issn.1001-4381.2017.001519
16 M. X. Ma, Z. X. Wang, J. B. Lu, J. C. Zhou, C. Liang, D. C. Zhu, D. L. Zhang, Effect of CeO2 doping on microstructure and wear resistance of CoCrCuFeMn high-entropy alloy, Trans. Mater. Heat Treat., 40(2019) 9, 50-56, doi: 10.13289/j.issn.1009-6264.2019-0137
17 A. Takeuchi, A. Inoue, Classification of bulk metallic glasses by atomic size difference, heat of mixing and period of constituent elements and its application to characterization of the main alloying element, Mater. Trans., 46(2005) 12, 2817-2829, doi: 10.2320/matertrans.46.2817
18 M. X. Ma, Z. X. Wang, J. C. Zhou, C. Liang, D. L. Zhang, Effect of Ti doping on microstructure and wear resistance of CoCrCuFeMn high-entropy alloys, J. Mech. Eng., 56(2020), 110-116, doi: 10.3901/JME.2020.10.110
19 M. X. Ma, Z. X. Wang, J. C. Zhou, J. B. Lu, C. Liang, D. L. Zhang, Microstructure and phase transformation of AlCoCrCuFe high entropy alloy, Hot Work. Technol., 47(2018), 31-34, doi: 10.14158/j.cnki.1001-3814.2018.14.008
20 Y. Q. Jiang, J. Li, Y. F. Juan, Z. J. Lu, W. L. Jia, Evolution in microstructure and corrosion behavior of AlCoCrxFeNi high-entropy alloy coatings fabricated by laser cladding, J. Alloy. Compd., 775(2019), 1-14, doi: 10.1016/j.jallcom.2018.10.091
21 N. Kumar, M. Fusco, M. Komarasamy, R. S. Mishra, M. Bourham, K. L. Murty, Understanding effect of 3.5wt.% NaCl on the corrosion of Al0.1CoCrFeNi high-entropy alloy, J. Nucl. Mater., 495(2017), 154-163, doi: 10.1016/j.jnucmat.2017.08.015
22 Y. Wang, M. Y. Li, L. L. Sun, F. Q. Bi, X. Y. Zhang, Microstructure and corrosion property of FeCrNiCo(Cu/Mn)high entropy alloys,” Chin. J. Nonferrous Met., 30(2020)1, 100-108, doi: 10.11817/j.ysxb.1004.0609.2020-35715
23 S. K. Bachani, C. J. Wang, B. S. Lou, L. C. Chang, J. W. Lee, Microstructural characterization, mechanical property and corrosion behavior of VNbMoTaWAl refractory high entropy alloy coatings: Effect of Al content, Surf. Coat. Tech., 403(2020), 126351, doi: 10.1016/j.surfcoat.2020.126351
24 Y. Z. Li, Y. Shi, Microstructure and corrosion resistance of AlCrFeCoNiCu high-entropy coating by laser deposition on an aluminum alloy, Chin. J. Optics, 12(2019) 2, 344-354, doi: 10.3788/CO.20191202.0344
25 Q. Liu, X. Y. Wang, Y. B. Huang, L. Xie, Q. Xu, L. H. Li, Effect of molybdenum content on microstructure and corrosion resistance of CoCrFeNiMo high entropy alloy, Chin. J. Mater. Res., 34(2020) 11,70-76, doi:10.11901/1005.3093.2020.269
Published
2021-12-10
How to Cite
1.
Ma M, Zhao L, WangZ- xin, LiS- zhi, Dong C. A EFFECT OF CeO2 DOPING ON THE MICROSTRUCTURE AND CORROSION BEHAVIOR OF CoCuNiTi HIGH-ENTROPY ALLOY COATINGS. MatTech [Internet]. 2021Dec.10 [cited 2026Jul.16];55(6):861–869. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/286
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