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Optimization of Process Parameters for Laser Remelting Nickel Coating
Hengzheng Li1, Yangyang Li1, Rui Zhan1
1School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, China.
Micromachines
|June 26, 2026
Summary
Laser remelting enhances nickel coating wear resistance. Optimizing laser frequency and energy density improves surface properties, leading to superior roughness and durability for advanced material applications.
Area of Science:
- Materials Science
- Surface Engineering
- Tribology
Background:
- Nickel coatings offer good wear resistance.
- Improving surface performance is crucial for demanding applications.
- Laser remelting is a promising surface modification technique.
Purpose of the Study:
- To enhance the surface properties of nickel coatings.
- To investigate the effects of laser remelting parameters on nickel coatings.
- To optimize laser remelting for improved wear resistance and surface characteristics.
Main Methods:
- Pulsed laser remelting (1064 nm wavelength, 5 ms pulse duration, 2 mm spot diameter) was applied to nickel-based coatings on copper.
- Systematic variation of laser frequency and energy density.
- Characterization included surface morphology, microhardness, 3D topography, and wear resistance testing.
Main Results:
- Laser frequency impacts surface properties by altering remelted spot overlap.
- Laser energy density influences the remelting zone and surface characteristics.
- Optimal parameters (10 Hz frequency, 165.87 J/mm² energy density) yielded favorable surface roughness and wear resistance.
Conclusions:
- Laser remelting effectively modifies nickel coating surfaces.
- Parameter optimization is key to achieving desired surface properties.
- The study identified specific conditions for enhanced surface performance and wear resistance.
