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Abstract <p>Ni—TiO<sub>2</sub> composite films were electrodeposited from a nickel-plating bath containing various amounts of TiO<sub>2</sub> particulates of different particle sizes. The films deposited from a bath that contained 10 g/L TiO<sub>2</sub> did not contain any TiO<sub>2</sub>. On the other hand, all films deposited from a bath with 40 g/L TiO<sub>2</sub> contained some TiO<sub>2</sub>. Current density and cathode rotation speed did not seem to have much effect on the incorporation of TiO<sub>2</sub> in the nickel matrix film, but the amount of TiO<sub>2</sub> powder in the bath and also their particle size appeared to be very influential parameters in the incorporation of TiO<sub>2</sub> particulates. The Ni–TiO<sub>2</sub> composite films showed some “cauliflower-type” globular grains, which were compact without any cracks or pits. They were smaller for the films deposited from a bath containing small particle-size TiO<sub>2</sub> particles. Using Monte Carlo simulation, it can be concluded that in the Ni–TiO<sub>2</sub> composite coating, nickel atoms are first deposited on the TiO<sub>2</sub> particulates and then a Ni–TiO<sub>2</sub> colony will be formed on the surface of the substrate and the final structure of cauliflower was created.</p>

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Investigation of the Cauliflower Morphology Formation in the Ni–TiO2 Coating Produced by the Rotating Cathode Method

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Ali Hadipour,
  • Mohammad Ebrahim Bahrololoom

摘要

Abstract

Ni—TiO2 composite films were electrodeposited from a nickel-plating bath containing various amounts of TiO2 particulates of different particle sizes. The films deposited from a bath that contained 10 g/L TiO2 did not contain any TiO2. On the other hand, all films deposited from a bath with 40 g/L TiO2 contained some TiO2. Current density and cathode rotation speed did not seem to have much effect on the incorporation of TiO2 in the nickel matrix film, but the amount of TiO2 powder in the bath and also their particle size appeared to be very influential parameters in the incorporation of TiO2 particulates. The Ni–TiO2 composite films showed some “cauliflower-type” globular grains, which were compact without any cracks or pits. They were smaller for the films deposited from a bath containing small particle-size TiO2 particles. Using Monte Carlo simulation, it can be concluded that in the Ni–TiO2 composite coating, nickel atoms are first deposited on the TiO2 particulates and then a Ni–TiO2 colony will be formed on the surface of the substrate and the final structure of cauliflower was created.