Effect of Boron-Aluminide Coating Applied on R4 Grade Offshore Mooring Chain Steel on Pitting and Tribo-Corrosion Behaviour

Authors : Sabri ALKAN

Pages : 302-317

Doi:10.55546/jmm.1296633

View : 17 | Download : 22

Publication Date : 2023-06-26

Article Type : Research Paper

Abstract :Offshore mooring systems are susceptible to wear, corrosion, and fatigue damage, making improving their tribocorrosion resistance essential. This study aims to evaluate the effects of boron-aluminizing treatment on the corrosion and tribocorrosion resistance of R4 steel in a marine environment. The boron-aluminide coating was characterized by SEM, EDS, and XRD, revealing the presence of FeAl as the dominant phase with minor amounts of FeB, Fe2B, and Fe2Al5 phases. Results showed that the boron-aluminide coating improved the corrosion resistance of R4 steel, acting as a barrier between the coating and the steel substrate and maintaining its corrosion resistance even under wear conditions. The findings suggest that the boron-aluminide coating can potentially improve the corrosion and tribocorrosion resistance of R4 steel in marine environments, making it a cost-effective alternative to passive materials for the thermochemical coating of low-alloy steels.
Keywords : HSLA çeliği, boro aluminyumlama, korozyon, tribokorozyon, deniz suyu