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Meeting MS&T25: Materials Science & Technology
Symposium Advanced Coatings for Wear and Corrosion Protection
Presentation Title Oxide thin films obtained by reactive sputtering for antifouling purposes
Author(s) Gabriel Abelha Carrijo Gonçalves, Bruno Leonardo Ribeiro Oliveira, Denise Tornavoi de Castro, Marcelo Rodrigues Pinto, Rogério Valentim Gelamo, Jeferson Aparecido Moreto, Idalina Vieira Aoki
On-Site Speaker (Planned) Gabriel Abelha Carrijo Gonçalves
Abstract Scope Antifouling coatings are essential to prevent biofouling on marine structures. This study evaluates CuO, ZnO, and CuO-ZnO thin films (TF) produced via reactive sputtering, focusing on morphology and antifouling performance. Wettability was analyzed through contact angle measurements, and morphology via atomic force microscopy. Biocidal activity against Pseudomonas aeruginosa was assessed colony-forming unit (CFU) analysis, metabolic activity (XTT), and fluorescence microscopy. The coatings maintained an average roughness of 28 nm. CuO-TF exhibited lower skewness (0.0901) and a 64% reduction in contact angle (50 ± 3)°, indicating increased hydrophilicity. This correlated with superior biocidal activity, showing reduced metabolic activity, (0.069 ± 0.036 absorbance at 492 nm), compared to the control (0.21 ± 0.11), ZnO-TF (0.25 ± 0.14), and CuO-ZnO-TF (0.22 ± 0.09). These findings highlight CuO-TF’s promising potential as an antifouling material.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anti-erosion coatings of silicon carbide and tantalum carbonitride nanocomposite by chemical vapor deposition
Cold-sprayed and arc-melted high-entropy alloys: wear, erosion and oxidation
Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Enhanced wear resistance of AS41 magnesium alloy via plasma electrolytic oxidation
Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Evolution of mechanical properties of PEO coated Mg rods.
Laser Cladding of CoCrCuFeNi and CoCrFeNi High-Entropy Alloys on DMR 249A Steel: Corrosion and Wear behavior
Modern corrosion and wear-resistant coatings obtained using FA-charges operating in aggressive conditions of industrial production
NbC Reinforced Ni Based Alloy Cladding by Thermal Spray Coatings and Weld Overlay Technique
Open-Air Plasma Assisted Organosilicon Coating on Automotive Aluminum Alloys for Corrosion Protection
Oxide thin films obtained by reactive sputtering for antifouling purposes
Tailored DLC Coating for Regolith Dust Mitigation
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications
Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray

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