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<p>A novel Ni–Co–P alloy coating and Ni–Co–P nanocomposite coating were prepared by jet electrodeposition. The influence of jet electrodeposition processing parameters on the microhardness and wear track width of the Ni–Co–P alloy coating was investigated. Additionally, the cross-section morphology, EDS spectra, XRD patterns, microhardness and wear resistance of the coatings under the optimum jet electrodeposition parameters were evaluated. The BBD analysis results revealed that the established mathematical model was reliable. Furthermore, the optimum Ni–Co–P alloy coating parameters optimized through the response surface method were as follows: jet voltage: 12.14&#xa0;V, plating solution temperature: 61.60&#xa0;°C, reciprocating sweep speed: 173.19&#xa0;mm·s<sup>−1</sup>, jet gap: 2.05&#xa0;mm, pulse frequency: 4.06&#xa0;kHz and duty cycle: 0.81. Under the optimum jet electrodeposition parameters, the results revealed that the significant influence of nano BN(h) and Al<sub>2</sub>O<sub>3</sub> particles on the coatings’ thickness, Co contents, crystallite size, microhardness and wear resistance of Ni–Co–P nanocomposite coating. In addition, compared with the Ni–Co–P alloy coating and Ni–Co–P–BN(h) nanocomposite coating, the Ni–Co–P–Al<sub>2</sub>O<sub>3</sub> composite coating exhibited a larger thickness (18.16&#xa0;µm) and Co element contents (39.51 wt·%), a smaller crystallite size (16.440&#xa0;nm), a higher microhardness (676.5 HV<sub>0.2</sub>), a more excellent wear resistance (402.9 µm).</p>

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Process optimization of jet electrodeposition Ni–Co–P alloy coating using response surface methodology and the tribological behavior of Ni–Co–P nanocomposite coatings

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月14日

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  • Yin Zhang,
  • Yonggang Wang,
  • Liang Yao,
  • Lingling Chen

摘要

A novel Ni–Co–P alloy coating and Ni–Co–P nanocomposite coating were prepared by jet electrodeposition. The influence of jet electrodeposition processing parameters on the microhardness and wear track width of the Ni–Co–P alloy coating was investigated. Additionally, the cross-section morphology, EDS spectra, XRD patterns, microhardness and wear resistance of the coatings under the optimum jet electrodeposition parameters were evaluated. The BBD analysis results revealed that the established mathematical model was reliable. Furthermore, the optimum Ni–Co–P alloy coating parameters optimized through the response surface method were as follows: jet voltage: 12.14 V, plating solution temperature: 61.60 °C, reciprocating sweep speed: 173.19 mm·s−1, jet gap: 2.05 mm, pulse frequency: 4.06 kHz and duty cycle: 0.81. Under the optimum jet electrodeposition parameters, the results revealed that the significant influence of nano BN(h) and Al2O3 particles on the coatings’ thickness, Co contents, crystallite size, microhardness and wear resistance of Ni–Co–P nanocomposite coating. In addition, compared with the Ni–Co–P alloy coating and Ni–Co–P–BN(h) nanocomposite coating, the Ni–Co–P–Al2O3 composite coating exhibited a larger thickness (18.16 µm) and Co element contents (39.51 wt·%), a smaller crystallite size (16.440 nm), a higher microhardness (676.5 HV0.2), a more excellent wear resistance (402.9 µm).