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<p>In this paper, Ni-W/SiO<sub>2</sub>, Ni-W/ZrO<sub>2</sub> and Ni-W/SiO<sub>2</sub>-ZrO<sub>2</sub> composite coatings were synthesized on the copper substrate by co-electrodeposition method. Then, the prepared coatings were characterized and their hardness, sliding wear resistance and corrosion resistance were evaluated. The effect of adding each of the reinforcement particles alone and in pairs in composite coatings on each of these properties was also investigated. Crystallite size decreased with the increase of two particles as reinforcement in the Ni-W alloy matrix. Using two types of SiO<sub>2</sub> and ZrO<sub>2</sub> reinforcement particles at the same time to Ni-W matrix compared to the case where one type of SiO<sub>2</sub> or ZrO<sub>2</sub> reinforcement particles were added alone led to better results for hardness, wear resistance and corrosion resistance. The microhardness of the Ni-W/SiO<sub>2</sub>-ZrO<sub>2</sub> composite coatings reached 980&#xa0;HV. The wear rate of this new coating reached 0.12 (mm<sup>3</sup>/N.m) × 10<sup>–3</sup>, which was less than half of the wear rate of the Ni-W/ZrO<sub>2</sub> coating. The Ni-W/SiO<sub>2</sub>-ZrO<sub>2</sub> composite coating showed a low corrosion rate i.e., 0.073&#xa0;mpy.</p>

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Influence of Variety of Reinforcement Particles on Properties of Composite Coating with Ni-W Alloy Matrix: ZrO2 and SiO2 Particles

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • Fatemeh Saeidpour,
  • Mehrdad Iranmanesh

摘要

In this paper, Ni-W/SiO2, Ni-W/ZrO2 and Ni-W/SiO2-ZrO2 composite coatings were synthesized on the copper substrate by co-electrodeposition method. Then, the prepared coatings were characterized and their hardness, sliding wear resistance and corrosion resistance were evaluated. The effect of adding each of the reinforcement particles alone and in pairs in composite coatings on each of these properties was also investigated. Crystallite size decreased with the increase of two particles as reinforcement in the Ni-W alloy matrix. Using two types of SiO2 and ZrO2 reinforcement particles at the same time to Ni-W matrix compared to the case where one type of SiO2 or ZrO2 reinforcement particles were added alone led to better results for hardness, wear resistance and corrosion resistance. The microhardness of the Ni-W/SiO2-ZrO2 composite coatings reached 980 HV. The wear rate of this new coating reached 0.12 (mm3/N.m) × 10–3, which was less than half of the wear rate of the Ni-W/ZrO2 coating. The Ni-W/SiO2-ZrO2 composite coating showed a low corrosion rate i.e., 0.073 mpy.