SODIUM GLUCONATE INTERCALATED Mg-Al LDH COATING TO IMPROVE THE CORROSION RESISTANCE OF AZ31

Hamid Ali (), Aneela Wakeel (), Muhammad Junaid Anjum, Waheed Qamar Khan (), Faizan Ali Ghauri (), Muhammad Raza () and Ghulam Yasin ()
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Hamid Ali: Department of Mechanical Engineering, University of Engineering and Technology, Taxila 47080, Pakistan
Aneela Wakeel: Department of Mechanical Engineering, University of Engineering and Technology, Taxila 47080, Pakistan
Muhammad Junaid Anjum: #x2020;College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
Waheed Qamar Khan: #x2021;Institute of Advanced Materials, Bahauddin Zakariya University, Multan 60800, Pakistan
Faizan Ali Ghauri: #x2021;Institute of Advanced Materials, Bahauddin Zakariya University, Multan 60800, Pakistan
Muhammad Raza: Department of Mechanical Engineering, University of Engineering and Technology, Taxila 47080, Pakistan
Ghulam Yasin: #x2020;College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Surface Review and Letters (SRL), 2021, vol. 28, issue 04, 1-9

Abstract: Mg-Al layer double hydroxide (LDH) intercalated with sodium gluconate (SG) is successfully synthesized on the AZ31. The hydrothermal treatment is utilized to develop the LDH coating and three different concentrations of SG, such as 0.1, 0.15, and 0.30M were tried to intercalate into the Mg-Al LDH. The crystalline structure of the produced coating reveals that only 0.30M of SG can provide sufficient anions to develop the LDH structure. The morphological features are evincing the concentration dependence of produced coatings. Fourier transform infra-red (FTIR) spectroscopy is performed to confirm the intercalation of SG. Moreover, the electrochemical characterization shows that the optimum concentration of SG can provide better corrosion resistance against aggressive electrolyte. Hence, the results of the study reveal that 0.30M SG intercalated LDH can provide excellent corrosion resistance to AZ31.

Keywords: AZ31; sodium gluconate; polarization curves; EIS; 3.5% NaCl (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X21500128

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