Long‐term corrosion behaviour of stainless steels in marine atmosphere

Abstract

Nine different stainless steel alloys were exposed for 5 years under marine environment and their corrosion behaviour was compared and assessed. The investigation of four different surface finishes for all alloys tested further enabled to consider industry-specific features of the surface finish for the material comparison.The results of the exposure tests yield conclusions regarding the influence of alloy composition, surface finish and exposure duration under marine environment. The three duplex stainless steels revealed excellent corrosion resistance even in case of crevices during the 5 years of exposure under the given exposure conditions. Also the molybdenum-alloyed ferritic steel 1.4521 showed good corrosion resistance comparable to the classical austenitic materials 1.4301 and 1.4404. K E Y W O R D Scorrosion, free weathering, marine atmosphere, stainless steels

Atmospheric corrosion patterns of electrogalvanized mild steel at east southern coastal areas of CPEC

“…Corrosivity of marine test sites has been studied worldwide, and the environmental parameters are reported …”

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

“…All the tests were performed at 37 ± 0.5 • C. A Pt counter electrode and an Ag/AgCl reference electrode were used. The samples were used as a working electrode, being placed in a Teflon holder for providing a working area of 1 cm 2 . The open-circuit potential (E OC ) was monitored for 15 h after immersion in the electrolyte.…”

“…As largely reported in the literature, stainless steels are the best corrosion-resistant alloys; however, their exposure to chemical demanding environments may produce and accelerate their corrosion. Consequently, the effects of different parameters related to their composition and the specific corrosive environments have been investigated [1][2][3][4][5]. The presence of Cr, Ni, Mo, and Cu in the composition of different stainless steel alloys has a positive role due to the ability of these elements to form superficial passive layers of oxides in corrosive environments, which limit the propagation of the corrosion process.…”

Corrosion Behavior of 316L Stainless Steels Exposed to Salt Lake Atmosphere of Western China for 8 years

“…Lv et al investigated the evolution of 316L stainless steels subjected to a simulated marine atmosphere and concluded that the initiation of pitting corrosion was associated with MnS dissolution and the depth of pits increased with the extending of corrosion time [5]. Burkert et al compared and assessed the corrosion behaviors of nine types of stainless steels exposed to marine environment as long as 5 years [6]. Tong et al investigated the corrosion behaviors of austenitic steels exposure to marine atmosphere of the South China Sea, and the results showed that the average corrosion rate of stainless steels was about 0.1-1 μm a −1 [7].…”