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Effect of Process Conditions on the Microstructure and Properties of Supercritical Ni-GQDs Plating. | LitMetric

AI Article Synopsis

  • The Ni-GQDs composite plating was developed using different electrodeposition techniques, specifically DC, single-pulse, and double-pulse, with GQDs added under supercritical CO conditions.
  • A variety of advanced microscopy methods were used to analyze the composite's microstructure, surface quality, grain size, and orientation, including HRTEM, SEM, XRD, and AFM.
  • The findings showed that the Ni-GQDs-III composite, created through double-pulse electrodeposition, had the best surface quality and resistance features, such as smaller grain sizes and improved wear and corrosion resistance.

Article Abstract

The Ni-GQDs composite plating was created using direct current (DC), single-pulse, and double-pulse power supplies, with GQDs serving as additives under supercritical CO conditions. A comparative analysis was conducted to evaluate the effects of different electrodeposition power sources on the microstructure and properties of the Ni-GQDs composite plating. High-Resolution Transmission Electron Microscopy (HRTEM) was employed to investigate the distribution of GQDs within the composite plating as well as to analyze d-spacing and diffraction patterns. Scanning Electron Microscopy (SEM) was utilized to illustrate the surface morphology of the plating and assess its surface quality. The grain size and preferred orientation of the plated layer were examined using X-ray Diffraction (XRD), while Atomic Force Microscopy (AFM) was used to evaluate the roughness of the surface. To compare the abrasion resistance of the various plating types, wear amounts and friction coefficients were measured through friction and wear tests. Additionally, corrosion resistance tests were performed to assess the corrosion resistance of each plating variant. The results indicate that the Ni-GQDs-III composite layers produced via double-pulse electrodeposition exhibit superior surface quality, characterized by smaller grain sizes, enhanced surface flatness, reduced surface roughness, and improved resistance to wear and corrosion.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11433132PMC
http://dx.doi.org/10.3390/ma17184620DOI Listing

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