| Autor: |
Bukovinová, Lenka, Bukovina, Michal, Pastorek, Filip |
| Předmět: |
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| Zdroj: |
Materials Engineering / Materiálové Inžinierstvo; 2014, Vol. 21 Issue 4, p153-158, 6p |
| Abstrakt: |
The corrosion resistance of materials is dependent also on their microstructure. Microstructural parts can have different electrochemical properties as the basic material. This is the cause of the inductive current formation in the structure which has a negative effect on the corrosion resistance of materials. The influence of the microstructure of a cast AZ91 magnesium alloy, to which the solution annealing treatment and the ageing treatment was applied, was evaluated in terms of its corrosion behaviour in 0.1 M NaCl solution at room temperature. The corrosion process was monitored by electrochemical impedance spectroscopy (EIS) and the surface was characterized by scanning Kelvin probe force microscopy (SKPFM). The extent of corrosion damage was dependent on the microstructure. Surface potential maps indicated that, the surface potential of α-matrix is more negative than surface potential of Mg17Al12 phase. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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