Green corrosion inhibitors intercalated Mg∶Al layered double hydroxide coatings to protect Mg alloy

• 作者: Muhammad Junaid Anjum Jing-Mao Zhao Vahdat Zahedi Asl Muhammad Uzair Malik Ghulam Yasin Waheed Qamar Khan
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 2254-2265
• 页数: 12页
• 语种: 英文

摘要

Mg alloy was protected with Mg∶Al layered double hydroxide (LDH) coating intercalated with three green corrosion inhibitors (sodium benzoate,3-amino-propyltriethoxysilane and 8-hydroxyquinoline).The in-situ hydrothermal approach was adopted to intercalate corro-sion inhibitors into Mg∶Al LDH coating.The intercalated Mg∶Al LDH coating was successfully acquired,and the crystalline structure of Mg∶Al LDH coating was verified with X-ray diffraction (XRD).The organic functional groups of corrosion inhibitors were identified with the help of Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS).The compact and uniform morphology was confirmed by scanning electron microscopy (SEM).The electrochemical measurement revealed better corrosion resistance of corrosion inhibitor-intercalated Mg∶Al LDH coatings as compared to that of pristine Mg alloy.The corrosion protection mechanism of corrosion inhibitors was described and unearthed the cor-rosion inhibitor with the best performance.