Research on Multi-Objective Optimization of Pulse Electrochemical Deposition Process and Properties of Ni-Fe Coatings on M142 Aluminum Alloy Surface Based on Grey Relational Analysis

MA Yue, YE Bing, YANG Cheng, AN Mingdong, ZHOU Fei

doi:10.16577/j.issn.1001-1560.2025.0022

2025 , Vol. 58 >Issue 2: 42 - 55

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0022

Research on Multi-Objective Optimization of Pulse Electrochemical Deposition Process and Properties of Ni-Fe Coatings on M142 Aluminum Alloy Surface Based on Grey Relational Analysis

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(1.State Key Laboratory of Mechanics and Control for Aerospace Structures， Nanjing University of Aeronautics and Astronautics，Nanjing 210016， China； 2.National Engineering Research Center of Light Alloy Net Forming， School of Materials Science and Engineering， Shanghai Jiao Tong University， Shanghai 200240， China)

YE Bing(1977-)，Ph.D.，Associate Professor，Research Focus: Corrosion of Light Metal，E-mail: bingye＠ sjtu.edu.cn；ZHOU Fei(1969-)，Ph.D.，Professor，Research Focus: Surface Engineering and Li-Ion Battery Related Technology，E-mail: fzhou＠nuaa.edu.cn

Received date: 2024-08-27

Revised date: 2024-09-18

Accepted date: 2024-09-19

Online published: 2025-03-20

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Abstract

In order to enhance the microhardness， wear resistance， and corrosion resistance of the M142 aluminum alloy material surface， the Taguchi method was employed to design L16 orthogonal experiments to study the effect of pulse electrochemical deposition parameters on the mechanical properties， wear resistance and corrosion resistance of Ni-Fe coatings.Based on variance analysis， the effects of pulse parameters such as current density， duty cycle and pulse frequency on the hardness， friction coefficient， wear rate， self-corrosion current density and charge transfer resistance of the coating were studied.Subsequently， the multi-objective optimization of pulse process was realized by grey correlation analysis.Results indicated that among the pulse parameters， the duty cycle had the most significant influence on the microhardness of the Ni-Fe coating， while the current density had greater impact on the wear resistance and corrosion resistance of the coating.Furthermore，by comprehensively analyzing the microhardness， wear resistance， and corrosion resistance of the Ni-Fe coating using the grey relational analysis method， it was finally concluded that when the pulse parameters were set as a frequency of 2 000 Hz， a duty cycle of 50%， and a current density of 2 A/dm2， the Ni-Fe coating exhibited the best comprehensive performance.The as-obtained coating had a maximum microhardness of 301 HV0.05，a maximum charge transfer resistance of 14 148 Ω·cm2， a minimum friction coefficient of 1.06， a minimum wear rate of 51.45×10-4 mm3/(N·m)， and a minimum self-corrosion current density of 0.57 μA/cm2.By comparing the microstructures of the coating before and after optimization，it was found that the refinement of the Ni-Fe coating grains was the main reason for the further improvement of the coating performance.

Key words： Ni-Fe coatings; pulse electrodeposition; Taguchi method; multi-objective optimization; grey relational analysis

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MA Yue, YE Bing, YANG Cheng, AN Mingdong, ZHOU Fei . Research on Multi-Objective Optimization of Pulse Electrochemical Deposition Process and Properties of Ni-Fe Coatings on M142 Aluminum Alloy Surface Based on Grey Relational Analysis[J]. Materials Protection, 2025 , 58(2) : 42 -55 . DOI: 10.16577/j.issn.1001-1560.2025.0022

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