Engineering Atomic-to-Nano Scale Structural Homogeneity towards High Corrosion Resistance of Amorphous Magnesium-Based Alloys
Yuan Qin,
Wentao Zhang,
Kanghua Li,
Shu Fu,
Yu Lou,
Sinan Liu,
Jiacheng Ge,
Huiqiang Ying,
Wei-Di Liu,
Xiaobing Zuo,
Jun Shen,
Shao-Chong Wei,
Horst Hahn,
Yang Ren,
Zhenduo Wu,
Xun-Li Wang,
He Zhu,
Si Lan
Affiliations
Yuan Qin
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Wentao Zhang
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Kanghua Li
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Shu Fu
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Yu Lou
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Sinan Liu
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Jiacheng Ge
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Huiqiang Ying
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Wei-Di Liu
Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane 4072, Australia
Xiaobing Zuo
X-ray Sciences Division, Argonne National Laboratory, Lemont, IL 60439, USA
Jun Shen
College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
Shao-Chong Wei
Suzhou Nuclear Powder Research Institute Co., Ltd., Suzhou 215004, China
Horst Hahn
Institute for Nanotechnology, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
Yang Ren
Department of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
Zhenduo Wu
Center for Neutron Scattering and Applied Physics, City University of Hong Kong Dongguan Research Institute, Dongguan 523000, China
Xun-Li Wang
Department of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
He Zhu
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Si Lan
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Magnesium-based amorphous alloys have aroused broad interest in being applied in marine use due to their merits of lightweight and high strength. Yet, the poor corrosion resistance to chloride-containing seawater has hindered their practical applications. Herein, we propose a new strategy to improve the chloride corrosion resistance of amorphous Mg65Cu15Ag10Gd10 alloys by engineering atomic-to-nano scale structural homogeneity, which is implemented by heating the material to the critical temperature of the liquid–liquid transition. By using various electrochemical, microscopic, and spectroscopic characterization methods, we reveal that the liquid–liquid transition can rearrange the local structural units in the amorphous structure, slightly decreasing the alloy structure’s homogeneity, accelerate the formation of protective passivation film, and, therefore, increase the corrosion resistance. Our study has demonstrated the strong coupling between an amorphous structure and corrosion behavior, which is available for optimizing corrosion-resistant alloys.
