Facile Fabrication of Micron-Laminated Cu-Al2O3 Coating with Long-Lasting Antifouling Performance and Excellent Wear Resistance

Marine biofouling is a worldwide issue that has aroused great concern in scientific community. Herein, a micron-laminated Cu-Al 2 O 3 composite coating was facilely obtained via plasma spraying of Cu/Al 2 O 3 powders to achieve eco-friendly and long-lasting antifouling performance along with superio...

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Bibliographic Details
Published in:Journal of thermal spray technology 2023-10, Vol.32 (7), p.2170-2186
Main Authors: Xu, Kangwei, Tian, Jiajia, Xie, Shufeng, Wu, Pin
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Machines
Manufacturing
Materials Science
Original Research Article
Processes
Surfaces and Interfaces
Thin Films
Tribology
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Summary:Marine biofouling is a worldwide issue that has aroused great concern in scientific community. Herein, a micron-laminated Cu-Al 2 O 3 composite coating was facilely obtained via plasma spraying of Cu/Al 2 O 3 powders to achieve eco-friendly and long-lasting antifouling performance along with superior wear resistance. The microstructure, long-term antifouling performance, and wear behavior of the Cu-Al 2 O 3 coatings as a function of Al 2 O 3 content were systematically investigated. Results indicated that the Cu-Al 2 O 3 coating exhibited controlled slow copper ions leach rate of approximately 5 times lower than that of the Cu coating, promoting eco-friendly and long-lasting antifouling protection. Additionally, the copper ions leach rate from the Cu-Al 2 O 3 coatings decreased as the Al 2 O 3 content increased, which was mainly related to the Cu amount involved in dissolution reaction. Long-term antifouling efficiencies against bacterial survival and algae settlement for the Cu-Al 2 O 3 composite coatings with 32.1-66.2% Al 2 O 3 were higher than 90%. Furthermore, the Cu-Al 2 O 3 coatings exhibited superior wear resistance by the strengthening of Al 2 O 3 . Continuous tribolayer containing trapped Al 2 O 3 particles formed on worn surface was responsible for the excellent wear resistance of Cu-Al 2 O 3 coatings. The outstanding comprehensive performance of Cu-Al 2 O 3 coating combining long-lasting and eco-friendly antifouling ability and remarkable wear resistance gives clear insight into its potential applications in marine antifouling field.
ISSN:1059-9630
1544-1016
DOI:10.1007/s11666-023-01624-z