CORROSION BEHAVIOR OF Ti–Al–N COATING MODIFIED ON CARBON STEEL PREPARED AT DIFFERENT TEMPERATURES

Chengqun Pan, Yulin Li and Qingdong Zhong ()
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Chengqun Pan: State Key Laboratory of Advanced Special (Shanghai University), School of Materials Science and Engineering, Shanghai University, Shanghai, P. R. China
Yulin Li: State Key Laboratory of Advanced Special (Shanghai University), School of Materials Science and Engineering, Shanghai University, Shanghai, P. R. China
Qingdong Zhong: #x2020;Panzhihua University, Material Science and Engineering College, China

Surface Review and Letters (SRL), 2020, vol. 27, issue 11, 1-7

Abstract: In this paper, pulsed arc ion plating was applied for preparing Ti–Al–N coatings. The effects of different process parameters on the structure and corrosion resistance properties of Ti–Al–N coating were studied by changing the temperature. The microstructures, morphology features and the corrosion resistance of the different temperatures of Ti–Al–N coating were investigated to simulate the corrosion conditions of seawater. All the samples (prepared at 370∘C, 375∘C, 380∘C and 385∘C) were measured in 3.5wt.% NaCl solution at 25∘C and characterized by potentiodynamic polarization curves, scanning electron microscopy (SEM) combined with analyzed by X-ray diffraction (XRD). The corrosion resistance of carbon steel was improved by the coating modification. The results showed that the sample prepared at 380∘C possesses excellent corrosion resistance where corrosion current density can only reach to 11.176μA/cm2, Meanwhile, SEM images also revealed that the microstructure of the sample is much smoother and nearly no defects can be observed.

Keywords: Ti–Al–N coating; electrochemical test; temperature (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X20500110

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