Abstract
Corrosion of rebar is the key factor affecting the service life of reinforced concrete, and amorphous coatings with superior corrosion resistance can be a potential protective material for the rebar. In the present study, a self-designed arc-sprayed Fe-based amorphous coating deposited on the surface of Q235 steel was investigated. The long-term electrochemical behavior of arc-sprayed Fe-based amorphous coating after pore-sealing treatment was studied for the first time. The microstructure of the sprayed coating was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The pores of the coating were sealed using the infiltration method. To explore the electrochemical behavior of the unmodified sprayed coating and the pore-sealed coating, electrochemical tests in 3.5 wt.% NaCl solution were employed. According to the SEM and TEM results, the unmodified sprayed coating was dense with a layered structure and was composed of an amorphous matrix and nanocrystalline structures. The average porosity of the unmodified sprayed coating was 3.95%. Electrochemical experiments revealed that the electrochemical response of the coating was more capacitive after pore-sealing treatment, which resulted in improved corrosion resistance. Kindly check and confirm whether the corresponding author is correctly identified.The identity of the corresponding author is correct.
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Acknowledgments
This work was supported by the (National Natural Science Foundation of China) under Grant (number 51579087); the (Fundamental Research Funds for the Central Universities) under (number B200205029).
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Wang, Y., Wu, Y., Hong, S. et al. Long-Term Electrochemical Behavior of an Arc-Sprayed FeCrBCSiNbMoNi Amorphous Coating for Rebars. J. of Materi Eng and Perform 32, 1160–1168 (2023). https://doi.org/10.1007/s11665-022-07150-3
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DOI: https://doi.org/10.1007/s11665-022-07150-3