Hydrothermal synthesis of Zn-Mg-based layered double hydroxide coatings for the corrosion protection of copper in chloride and hydroxide media

作     者：Nikhil Gopal Ji Rajiv Prakash Nikhil;Gopal Ji;Rajiv Prakash

作者机构：School of Materials Science and TechnologyIndian Institute of Technology(BHU)VaranasiVaranasi-221005Uttar PradeshIndia Centre for advanced studiesDr.APJAKTU LucknowU.P.-226031India 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2021年第28卷第12期

页      面：1991-2000页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 1009[医学-特种医学] 

基　　金：the support of lab mates of IIT BHU Varanasi and Colleagues of Centre for Advanced studies(APJAKTU Lucknow) 

主　　题：corrosion coating copper 

摘      要：Layered double hydroxides(LDHs)hinder corrosive elements by forming a double layer and locking them between its ***,LDHs are interesting materials in corrosion *** this work,Zn-Mg-based LDHs are grown over a copper substrate by using a hydrothermal *** types of Zn-Mg-based LDH coating are prepared based on hydrothermal reaction *** types are characterized through Fourier transform infrared spectroscopy,Raman spectroscopy,high-resolution scanning electron microscopy,energy dispersive X-ray analysis,atomic force microscopy,and X-ray *** show that the two types of LDH coating are successfully grown on copper;however,they differ in thickness and structural *** testing of the LDH coatings is executed in 0.1 M Na Cl and 0.1 M Na OH through alternating current impedance measurements and Tafel polarization *** show that L48 gives more than 90%protection to copper,which is higher than the protection provided by ***,both LDH coatings(L24 and L48)are more effective corrosion inhibitors in Na Cl than in Na OH,suggesting that the LDH coatings can more efficiently exchange Cl ions than OH ions.