Influence of Laser Scanning Speed on Wear and Corrosion Resistance of Aluminum–Nickel Coating on Magnesium Alloy

To improve the wear and corrosion resistance, Al-Ni coating was prepared on Mg alloy by laser cladding, and the influence of the laser scanning speed on the microstructure, wear and corrosion resistance of the coatings was systematically analyzed. The results showed that the coatings with different...

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Bibliographic Details
Published in:Processes 2024-08, Vol.12 (8), p.1689
Main Authors: Gao, Yali, Jiang, Shan, Lu, Pengyong, Bai, Sicheng, Zhang, Dongdong, Jie, Meng
Format: Article
Language:English
Subjects:
Aluminum
Coatings
Corrosion
Corrosion potential
Corrosion rate
Corrosion resistance
Corrosion resistant alloys
Corrosive wear
Electrodes
Experiments
Laser applications
Laser beam cladding
Lasers
Magnesium
Magnesium alloys
Magnesium base alloys
Microhardness
Morphology
Nickel coatings
Solid solutions
Substrates
Wear resistance
Work stations
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Summary:To improve the wear and corrosion resistance, Al-Ni coating was prepared on Mg alloy by laser cladding, and the influence of the laser scanning speed on the microstructure, wear and corrosion resistance of the coatings was systematically analyzed. The results showed that the coatings with different scanning speeds were composed of Al3Ni2, Mg17Al12 and Mg2Al3 phases. The coatings presented fine needle-like grains. Under different scanning speeds, the microhardness of the coatings was 3.3–4.8 times that of the substrate, and the wear volume of the coatings was decreased by 40.08–51.38%. The coating with a laser scanning speed of 600 mm/min had the highest hardness, the best wear and corrosion resistance.
ISSN:2227-9717
2227-9717
DOI:10.3390/pr12081689