腐蚀
涂层
壳聚糖
材料科学
氯化物
钠
冶金
核化学
化学
复合材料
有机化学
作者
Ana Alejandra Aguilar-Ruiz,Reyna G. Sánchez‐Duarte,Víctor M. Orozco-Carmona,Germán Eduardo Dévora‐Isiordia,Yedidia Villegas‐Peralta,Jesús Álvarez‐Sánchez
出处
期刊:Coatings
[Multidisciplinary Digital Publishing Institute]
日期:2024-09-29
卷期号:14 (10): 1244-1244
被引量:12
标识
DOI:10.3390/coatings14101244
摘要
This study investigates the corrosion resistance of chitosan and its crosslinked form coatings applied on stainless steel as substrate using various analytical techniques. Fourier transform infrared spectroscopy (FTIR-ATR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) were employed for surface characterization. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) techniques were used to analyze the electrochemical behavior. Four coatings were evaluated along with naked stainless steel (ss): chitosan (Chi), chitosan crosslinked with ammonium paratungstate (Chi/PTA), chitosan crosslinked with polyethylene glycol (Chi/PEG), and chitosan crosslinked with polyvinylpyrrolidone (Chi/PVP). Electrochemical measurement parameters analysis assessed the coating corrosion resistance, such as impedance modulus (|Z|) and corrosion potential (Ecorr). Results indicate varying degrees of corrosion resistance among the coatings. Chi/PTA exhibited notable characteristics in the electrochemical tests, showing promising polarization resistance (Rp) and impedance behavior trends. Conversely, Chi/PEG showed differing electrochemical responses, suggesting higher susceptibility to corrosion under the study conditions. These findings contribute to understanding the electrochemical performance of chitosan-based coatings on stainless steel, highlighting their potential in corrosion protection applications.
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