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From China:The differential corrosion mechanism of high strength steel in different Marine corrosion zones was proposed

Recently, the team of Huang Yanliang, a researcher at the Institute of Oceanography, Chinese Academy of Sciences, conducted a field study on the corrosion behavior of high-strength steel in different marine corrosion zones. The study found that the corrosion behavior of high-strength steel in marine dry-wet cycles and immersion environments are significantly different , and proposes a differentiated corrosion mechanism of high-strength steels in marine dry-wet cycles and submerged environments.

With the further development and utilization of Marine resources worldwide, high strength steel is more and more widely used in the field of Marine engineering. However, corrosion, hydrogen penetration and stress corrosion cracking caused by high salt and high humidity Marine corrosive environment threaten the safe service of high strength steel seriously. Therefore, the safety application of high strength steel in Marine environment has always been concerned. The research team has been engaged in environmental corrosion assessment for a long time, and has in-depth research foundation on corrosion and hydrogen infiltration behavior and mechanism of high-strength steel in different environments. Marine corrosion environment corrosion mainly divided into five zones, including Marine atmospheric zone, splash zone, tidal range zone, full immersion zone and the bottom mud area, previous studies have shown that different zones of corrosion environment differences often lead to their differences in the corrosion behavior of steel materials in macroscopic corrosion at different zones of law has been widely studied, However, the analysis of corrosion products of high strength steel in different zones and its influence on the development of corrosion need further study.

The team analyzed the composition and structure of the corrosion products of high-strength steel in different corrosion zones by combining the analysis of corrosion hanging plates in the sea and the composition of indoor materials. Nitrogen adsorption method was used for the first time to characterize the pore characteristics of the corrosion products formed in different corrosion zones. Furthermore, the differential mechanism of corrosion product layer on the further corrosion of high strength steel under ocean dry-wet cycling and immersion conditions was revealed by combining with electrochemical experiments.

The results are in The journal Science of The Total Environment. The research work was supported by the National Natural Science Foundation of China.

Paper Link & NBSP;

Nitrogen adsorption/desorption curve and pore size distribution of corrosion products formed in different Marine corrosion zones (a) atmospheric region, (b) splash region, (c) tidal range region, (d) full leaching region & NBSP;

Differential corrosion mechanism of high strength steel under ocean dry-wet cycle and immersion conditions & NBSP;

Recently, a researcher at the Chinese Academy of Sciences institute of Marine yan-liang huang team of high strength steel in corrosion behavior of different Marine corrosion zone to carry out the practical research, the study found that high strength steel in Marine wet – dry cycle and the corrosion behavior of immersion environment exists obvious difference, and put forward the high strength steel in Marine wet – dry cycle of differentiation and immersion environment corrosion mechanism.

With the further development and utilization of Marine resources worldwide, high strength steel is more and more widely used in the field of Marine engineering. However, corrosion, hydrogen penetration and stress corrosion cracking caused by high salt and high humidity Marine corrosive environment threaten the safe service of high strength steel seriously. Therefore, the safety application of high strength steel in Marine environment has always been concerned. The research team has been engaged in environmental corrosion assessment for a long time, and has in-depth research foundation on corrosion and hydrogen infiltration behavior and mechanism of high-strength steel in different environments. Marine corrosion environment corrosion mainly divided into five zones, including Marine atmospheric zone, splash zone, tidal range zone, full immersion zone and the bottom mud area, previous studies have shown that different zones of corrosion environment differences often lead to their differences in the corrosion behavior of steel materials in macroscopic corrosion at different zones of law has been widely studied, However, the analysis of corrosion products of high strength steel in different zones and its influence on the development of corrosion need further study.

The team analyzed the composition and structure of the corrosion products of high-strength steel in different corrosion zones by combining the analysis of corrosion hanging plates in the sea and the composition of indoor materials. Nitrogen adsorption method was used for the first time to characterize the pore characteristics of the corrosion products formed in different corrosion zones. Furthermore, the differential mechanism of corrosion product layer on the further corrosion of high strength steel under ocean dry-wet cycling and immersion conditions was revealed by combining with electrochemical experiments.

The results are in The journal Science of The Total Environment. The research work was supported by the National Natural Science Foundation of China.

Paper Link & NBSP;

Nitrogen adsorption/desorption curve and pore size distribution of corrosion products formed in different Marine corrosion zones (a) atmospheric region, (b) splash region, (c) tidal range region, (d) full leaching region & NBSP;

Differential corrosion mechanism of high strength steel under ocean dry-wet cycle and immersion conditions & NBSP;

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