The Application of Nanocoating and Cold-Dip Galvanization on Mitigating Corrosion for Ship and Offshore Mooring Chains DOI Creative Commons
Cyril U. Orji, Samson Nitonye,

Felix U Asuquo

и другие.

Kapal Jurnal Ilmu Pengetahuan dan Teknologi Kelautan, Год журнала: 2025, Номер 22(1), С. 52 - 63

Опубликована: Апрель 22, 2025

Corrosion is a major challenge for marine vessels and offshore mooring systems due to the aggressive maritime environment characterized by high salinity, biological activity, temperature variations. This study explores effectiveness of nano-coatings derived from waste snail shells compared traditional cold-dip galvanization in mitigating corrosion on ANSI A36 steel chains. Three specimen groups—nano-epoxy composite coating, galvanized, bare metal—were tested fresh saltwater environments over five-week period. Water composition, pH, salinity were analyzed using Atomic Absorption Spectroscopy (AAS) assess their influence behavior. Weekly measurements rates taken evaluate protective performance each treatment. The results demonstrated significant reduction both nano-coated galvanized samples metal. Specifically, nano-epoxy coating reduced 0.13 mm/week below 0.02 mm/week, while showed similar decline, converging around mm/week. Bare metal, however, stabilized at approximately 0.05 These findings suggest that are promising, sustainable alternative conventional galvanization, enhancing durability operational lifespan structures. advancement supports industry’s need meet stringent classification guidelines extend design life critical components. Further long-term exposure studies recommended confirm sustained coatings environments.

Язык: Английский

The Application of Nanocoating and Cold-Dip Galvanization on Mitigating Corrosion for Ship and Offshore Mooring Chains DOI Creative Commons
Cyril U. Orji, Samson Nitonye,

Felix U Asuquo

и другие.

Kapal Jurnal Ilmu Pengetahuan dan Teknologi Kelautan, Год журнала: 2025, Номер 22(1), С. 52 - 63

Опубликована: Апрель 22, 2025

Corrosion is a major challenge for marine vessels and offshore mooring systems due to the aggressive maritime environment characterized by high salinity, biological activity, temperature variations. This study explores effectiveness of nano-coatings derived from waste snail shells compared traditional cold-dip galvanization in mitigating corrosion on ANSI A36 steel chains. Three specimen groups—nano-epoxy composite coating, galvanized, bare metal—were tested fresh saltwater environments over five-week period. Water composition, pH, salinity were analyzed using Atomic Absorption Spectroscopy (AAS) assess their influence behavior. Weekly measurements rates taken evaluate protective performance each treatment. The results demonstrated significant reduction both nano-coated galvanized samples metal. Specifically, nano-epoxy coating reduced 0.13 mm/week below 0.02 mm/week, while showed similar decline, converging around mm/week. Bare metal, however, stabilized at approximately 0.05 These findings suggest that are promising, sustainable alternative conventional galvanization, enhancing durability operational lifespan structures. advancement supports industry’s need meet stringent classification guidelines extend design life critical components. Further long-term exposure studies recommended confirm sustained coatings environments.

Язык: Английский

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