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Volume 30 Issue 6
Jun.  2023
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文章导航 >  矿物冶金与材料学报（英文）  > 2023  >  30(6): 1078-1092
Saeed Mojallal, Hurieh Mohammadzadeh, Abbas Aghaeinejad-Meybodi, and Robabeh Jafari, Effect of NiO–NiCr2O4 nano-oxides on the microstructural, mechanical and corrosion properties of Ni-coated carbon steel, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1078-1092. https://doi.org/10.1007/s12613-022-2584-3
Cite this article as:
Saeed Mojallal, Hurieh Mohammadzadeh, Abbas Aghaeinejad-Meybodi, and Robabeh Jafari, Effect of NiO–NiCr2O4 nano-oxides on the microstructural, mechanical and corrosion properties of Ni-coated carbon steel, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1078-1092. https://doi.org/10.1007/s12613-022-2584-3
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研究论文

NiO–NiCr2O4纳米氧化物对Ni涂层碳钢组织、力学和腐蚀性能的影响

  • 1)

    Materials Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

  • 2)

    Chemical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

  • 通讯作者:

    Hurieh Mohammadzadeh    E-mail: h.mohamadzadeh@urmia.ac.ir

  • 本文采用不同比例的Ni–Cr纳米氧化物对纯Ni及其复合材料进行涂层，研究其涂层特性、力学性能和腐蚀性能。成分分布均匀的Ni–Cr纳米氧化物复合材料首次通过化学共沉淀法合成. 采用电沉积法将纯Ni和Ni–(Ni–Cr)氧化物(10、20、30、40和50 g/L)涂在钢板上。采用透射电子显微镜和场发射扫描电子显微镜观察了粉末和涂层的微观结构，并采用X射线衍射分析研究其化学成分。本文还测试了涂层的显微硬度、厚度和耐磨性，进行了极化和电化学阻抗谱(EIS)测试，分析了涂层的腐蚀行为，并开发了相应的等效电路。结果表明，在10–30 g/L的Ni基体中，纳米氧化物分布均匀，并检测到高浓度的团聚氧化物。30 g/L的Ni基体涂层的显微硬度最大，为HV 661, 厚度为116 µm), 并具有最大耐磨性. 一个三回路等效电路与所有EIS数据相对应。纳米氧化物浓度为30 g/L时，耐蚀性增加，不过当纳米氧化物浓度为40 g/L时，耐蚀性下降。50 g/L的样品耐腐蚀性能最好。
    • Research Article

    Effect of NiO–NiCr2O4 nano-oxides on the microstructural, mechanical and corrosion properties of Ni-coated carbon steel

    + Author Affiliations
      Abstract
    • Pure Ni and its composites with different percentages of Ni–Cr nano-oxides were coated over carbon steel to assess the coating features and mechanical and corrosion behavior. A nano-oxide composite of Ni–Cr was first synthesized through chemical coprecipitation with uniform distribution constituents. Electrodeposition was employed to coat pure Ni and Ni–(Ni–Cr) oxides (10, 20, 30, 40, and 50 g/L) on the steel sheets. Transmission electron microscope and field emission scanning electron microscope were adopted to examine the microstructure of powders and coatings, and X-ray diffraction analysis was employed to study the chemical composition. The microhardness, thickness, and wear resistance of the coatings were assessed, polarization and electrochemical impedance spectroscopy (EIS) tests were conducted to analyze the corrosion behavior, and the corresponding equivalent circuit was developed. Results showed flawless and crack-free coatings for all samples and uniform distribution of nano-oxides in the Ni matrix for the samples of 10–30 g/L. Agglomerated oxides were detected at high concentrations. Maximum microhardness (HV 661), thickness (116 µm), and wear resistance of coatings were found at 30 g/L. A three-loop equivalent circuit corresponded satisfactorily to all EIS data. The corrosion resistance increased with the nano-oxide concentration of up to 30 g/L but decreased at 40 g/L. The sample of 50 g/L showed the best corrosion resistance.
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