| Autor: |
Fedorov, V. A., Balybin, D. V., Pluzhnikova, T. N., Fedotov, D. Yu., Berezner, A. D., Boitsova, M. V. |
| Předmět: |
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| Zdroj: |
Protection of Metals & Physical Chemistry of Surfaces; Apr2023, Vol. 59 Issue 2, p272-278, 7p |
| Abstrakt: |
The electrochemical and corrosion behavior of Fe80.22Si8.25Nb10.09Cu1.44 amorphous metal alloy (AMA) was studied in alkali water solutions with the addition of potassium thiocyanate. An increase in the rate of electrode processes (stimulation) in comparison with the base solution was observed at a KSCN concentration of 0.5, 1.0, and 10.0 mM. At a concentration of 5.0 mM, there was a reduction in both cathodic and anodic processes (inhibition). These findings were interpreted within the framework of an electrochemical mechanism and specific structural features of the electrode material. A change in mechanical properties of AMA after exposure of the alkaline medium with a composition of 0.5 М KON + y mM KSCN, where y = 0.5, 1.0, 5.0, and 10.0, was studied. A change in surface roughness has been established. The fracture pattern changed from a brittle cleavage without influence of the environment to the plastic destruction with crack branching and formation of folded structures for all used solutions. After exposure of the 0.5 М KON + 5 mM KSCN solution, a twofold decrease in tensile strength and Young's modulus was observed. An increase in the KSCN concentration leads to an increase in surface microhardness. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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