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<p>The simultaneous reinforcement of SiC-TiC particles into the nickel matrix using ethylene glycol as a non-aqueous solvent on a copper substrate represents an innovative approach for synthesizing the composite material by the electrodeposition method. The quality of the composite coatings was investigated at various current density regions, and the performance was compared with pure nickel coatings. Despite low concentration of TiC in the bath solution, their wt% incorporation was found significantly higher than that of SiC particles. Incorporation of the SiC-TiC particles into nickel matrix significantly improved compactness, thickness, and adherence properties of the composite coatings at optimum current density, i.e., 3.0 A/dm<sup>2</sup> and microhardness of composites was also remarkably improved (440 to 660 HV). The relative texture coefficient data revealed preferred orientation in case the composite was along the (220) plane at current density 3.0 A/dm<sup>2</sup>. Grain refinement was also observed after the incorporation of particles into pure nickel matrix. A shift in corrosion potential in a more noble direction and a reduction in corrosion current value indicate that the chemically inert passive layer was formed due to incorporation of the particles resulting in improved corrosion resistance. Atomic force microscopy analysis revealed that the Ni/SiC-TiC composite exhibited a low surface roughness.</p>

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Synergistic effects of SiC-TiC reinforcement on the microstructural evolution and properties of electrodeposited nickel matrix composites

  • 期刊论文

  • 发表日期：

    2026年5月22日

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  • Randhir Kumar,
  • Aniket Kumar Singh,
  • Rahul Singh,
  • Ekta Sonker,
  • Pradeep Kumar Rao,
  • Alok Kumar Chaudhari

摘要

The simultaneous reinforcement of SiC-TiC particles into the nickel matrix using ethylene glycol as a non-aqueous solvent on a copper substrate represents an innovative approach for synthesizing the composite material by the electrodeposition method. The quality of the composite coatings was investigated at various current density regions, and the performance was compared with pure nickel coatings. Despite low concentration of TiC in the bath solution, their wt% incorporation was found significantly higher than that of SiC particles. Incorporation of the SiC-TiC particles into nickel matrix significantly improved compactness, thickness, and adherence properties of the composite coatings at optimum current density, i.e., 3.0 A/dm2 and microhardness of composites was also remarkably improved (440 to 660 HV). The relative texture coefficient data revealed preferred orientation in case the composite was along the (220) plane at current density 3.0 A/dm2. Grain refinement was also observed after the incorporation of particles into pure nickel matrix. A shift in corrosion potential in a more noble direction and a reduction in corrosion current value indicate that the chemically inert passive layer was formed due to incorporation of the particles resulting in improved corrosion resistance. Atomic force microscopy analysis revealed that the Ni/SiC-TiC composite exhibited a low surface roughness.