| Autor: |
Deshpande, Swapnil S., Deshpande, Pravin P., Rathod, Manoj J. |
| Předmět: |
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| Zdroj: |
JOM: The Journal of The Minerals, Metals & Materials Society (TMS); Jan2024, Vol. 76 Issue 1, p268-276, 9p |
| Abstrakt: |
Electrochemical properties of cascade e-ion plasmaTM -treated and plasma-nitrided 4140 steel were investigated using surface characterization and electrochemical methods. Scanning electron microscopy, X-ray diffraction technique, and X-ray photoelectron spectroscopy revealed the formation of a compound layer and oxide layer on the surface of the plasma-nitrided and cascade e-ion plasmaTM-treated steel, respectively. Open circuit potential measurements indicated a better corrosion protection ability of the cascade e-ion plasmaTM treatment than plasma-nitriding with an anodic protection mechanism. The corrosion rate of the cascade e-ion plasmaTM-treated steel was 0.09 mpy, which is substantially lower than that of untreated steel. Electrochemical impedance spectroscopy supported the potentiodynamic investigations and indicated long-term protection. The composite layer of iron oxides and complex nitrides generated during cascade e-ion plasmaTM treatment protects the steel by inhibiting the transport of reacting species. The superhydrophobic surface topography of the cascade e-ion plasmaTM-treated steel seems to be contributing to the overall protection. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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