Influence of Corrosion Morphology on Inductive Impedance of Mg-Gd-Y-Zn-Zr-Ag Alloy
| Autor: | Shunong Jiang, Chuming Liu, Xu Shiyuan, Zhiyong Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Alloy 02 engineering and technology Corrosion morphology engineering.material Low frequency 021001 nanoscience & nanotechnology 01 natural sciences Dielectric spectroscopy Corrosion Mechanics of Materials 0103 physical sciences engineering Immersion (virtual reality) General Materials Science Ag alloy Composite material 0210 nano-technology Electrical impedance |
| Zdroj: | Journal of Materials Engineering and Performance. 30:4126-4137 |
| ISSN: | 1544-1024 1059-9495 |
| DOI: | 10.1007/s11665-021-05638-y |
| Popis: | In this work, the corrosion behavior of Mg-6Gd-4Y-0.6Zn-0.5Zr-0.3Ag alloy was investigated by using electrochemical impedance spectroscopy (EIS). EIS results showed that the inductive impedance changed with immersion duration. After 1 h of immersion, only one inductive loop was found at low frequency (LF). After prolonged immersion (12 and 24 h), dual inductive loops were observed at LF. The corrosion morphology observation indicated that the change in inductive impedance was related to corrosion morphology. The sample immersed for 1 h exhibited a uniform corrosion morphology. Nonuniform corroded areas were observed on samples immersed for a prolonged duration. Severely and lightly corroded areas exhibited different corrosion morphologies. These morphological differences led to the considerable difference between the time constants of inductive impedance on severely and lightly corroded areas. Thus, dual inductive loops could be observed in the EIS of the samples immersed for a prolonged duration. |
| Databáze: | OpenAIRE |
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