Bo Zhang, Wei Liu, Jiaqi Xie, Yipu Sun, Longjun Chen, Hai Li, Fulong Wang, Bowen Hou
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Substitution of Ni with Cu and Its Impact on the Corrosion Resistance of Ni-Advanced Weathering Steels in the Simulated Tropical Marine Atmosphere
The effect of substituting equal concentrations of Ni with 0.7 wt% and 1 wt% Cu on the corrosion behavior of Ni-advanced weathering steels (WS) in the simulated tropical marine atmosphere was studied. The results reveal that the effect of substituting Ni with Cu on enhancing the corrosion resistance of Ni-advanced WS is positively correlated with the substitution of Cu, as the concentration of Cu substitution affects the synergistic effect of Cu/Ni in Ni-advanced WS. With the substitution content of 0.7 wt% Cu, the synergy effect of Cu/Ni on enhancing the densification and protection of the rust layer is weakened which promotes the charge transfer process and accelerates the corrosion process of Ni-advanced WS. As the content of Cu substituting Ni increases up to 1 wt%, the synergy effect of Cu/Ni is stronger than that of Ni at the same content. Consequently, modifies the Ni-depleted region in the rust layer, the α-FeOOH content in the rust layer is increased, makes the rust layer dense, and intensifies the charge transfer resistance at the substrate-rust interface, thereby improving the corrosion resistance of the Ni-advanced WS.
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
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