Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Corrosion Resistance and Mechanism of AT13/Fe-based Amorphous Composite Coatings

Version 1 : Received: 26 November 2021 / Approved: 29 November 2021 / Online: 29 November 2021 (12:32:17 CET)

How to cite: Chu, Z.; Teng, S.; Zhou, Y.; Zheng, X.; Xu, J.; Wang, F.; Zhang, B. The Corrosion Resistance and Mechanism of AT13/Fe-based Amorphous Composite Coatings. Preprints 2021, 2021110532 (doi: 10.20944/preprints202111.0532.v1). Chu, Z.; Teng, S.; Zhou, Y.; Zheng, X.; Xu, J.; Wang, F.; Zhang, B. The Corrosion Resistance and Mechanism of AT13/Fe-based Amorphous Composite Coatings. Preprints 2021, 2021110532 (doi: 10.20944/preprints202111.0532.v1).

Abstract

In the present study, the corrosion resistance of amorphous coating and composite coatings in 3.5 wt.% NaCl, 0.5 M H2SO4 and 10 wt.% NaOH solution were studied. The composite coatings exhibit superior corrosion resistance. When the content of AT13 (Al2O3–13 wt.% TiO2)was 15 wt.%, the composite coating has the lowest corrosion current density (1.75×10-6 A cm-2), which is 5.14×10-5 A cm-2 for Fe-based metallic glassy coating, and the highest corrosion potential (-411 mV), which is -580 mV for Fe-based metallic glassy coating. The breakdown potential of the passivation film in 3.5 wt.% NaCl solution was much higher than that of 316L.The long-time immersion corrosion tests carried out on different coatings showed that the corrosion protection effect of coating was enhanced with the increase of the amount of AT13 added.

Keywords

Fe-based amorphous coating; AT13; Plasma spraying; Corrosion resistance

Subject

ENGINEERING, Other

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