Abstract
Abstract The aspartic acid (ASP), an environment-friendly corrosion inhibitor, was explored to intercalate into the ZnAl-layered double hydroxide (ZnAl-LDH) and MgAl-LDH coatings on AZ31 magnesium alloys by a facile one-step hydrothermal method. The morphology, composition, structure and corrosion resistance of the prepared coatings were comparatively investigated. It is found that the uniform and dense layered nanosheet (NS) vertically grows on the substrate, and the MgAl−ASP-LDH films exhibit a three-dimensional (3D) rose-like sheet structure with high ratio of pore coverage. The MgAl−ASP-LDH coating exhibits better corrosion resistance and durability of longtime immersion than ZnAl−ASP-LDH coating. The corrosion current density of two coatings is two or three orders of magnitude lower than that of bare Mg alloy, indicating that ZnAl/MgAl-LDH films intercalated with organic ASP anions can significantly improve the corrosion resistance of Mg alloy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of Nonferrous Metals Society of China
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
