Corrosion behavior of the 3 wt.% Ni weathering steel with replacing 1 wt.% Cr in the simulated tropical marine atmospheric environment

Zhang, Bo; Liu, Wei; Sun, Yipu; Yang, Wenke; Chen, Longjun; Xie, Jiaqi; Li, Wenqi

doi:10.1016/j.jpcs.2023.111221

Cited by 12 publications

(1 citation statement)

References 53 publications

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“…The results revealed that due to the addition of alloying elements such as Cr, Cu, P, and Ni, the corrosion rate of WS was lower than that of CS, meanwhile, the Cr and Ni had significant effects on the corrosion rate as well as the form and composition of the rust layer. Zhang et al [26] used 1wt%Cr instead of 1wt%Ni in weathering steel to study its corrosion behavior and found that this method can effectively promote the transformation of γ-FeOOH to α-FeOOH in the initial corrosion stage, which is conducive to the densification of rust layer and thus prevents the intrusion of corrosive medium. Although there has been a lot of research on the corrosion of WS, there is a lack of research on the corrosion mechanism of WS and CS in marine and industrial atmospheric environments, and the difference in corrosion resistance between WS and CS under marine and industrial atmospheric environments is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance behavior of weathering GR65 steel under marine and industrial atmospheric environment

Liu,

Gao,

Wang

et al. 2024

Second International Conference on Electrical, Electronics, and Information Engineering (EEIE 2023)

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This paper focused on the corrosion resistance of weathering GR65 steel under marine and industrial atmospheric environments, the weight loss method and Tafel method were respectively used to judge the anticorrosion mechanism. The corrosion resistance of Q345 steel, which has been commonly used in transmission towers and steel factory buildings, was also investigated for comparison. The 3.5%NaCl solution and 3.5%Na2SO4 solution were respectively adopted to simulate the marine and industrial atmospheric environment, and the corrosion resistance of GR65 and Q345 steel in these two types of solution were carefully discussed and compared. The results show that GR65 and Q345 are more prone to corrosion in 3.5%NaCl solution than in 3.5%Na2SO4 solution, Specifically, the corrosion rate of GR65 is about 51% and 52.7% lower than that of Q345 respectively in 3.5%NaCl and 3.5%Na2SO4 solution. The rust layer on the surface of Q345 steel is poor in continuity, loose-porous, and easy to peel, which fails to prevent the rust layer from continuing to develop inward. Comparatively, the rust layer of GR65 surface exhibits good density, continuity, and strong adhesion, which is helpful in slowing down the further development of the rust. Thus, the GR65 shows better corrosion resistance than Q345 steel.

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Section: Introductionmentioning

confidence: 99%