| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1521175 | Materials Chemistry and Physics | 2015 | 10 Pages |
Abstract
Al-24Co, Al-25Co, Al-26Co, Al-27Co and Al-28Co alloys (composition in atomic percent) were prepared by arc-melting in high purity argon. Each alloy was found to consist of several microstructure constituents. Precipitation sequences of different intermetallic compounds were described based on a previously published Al-Co phase diagram and non-equilibrium processes taking place during casting. Electrochemical corrosion was investigated by potentiodynamic polarization in aqueous NaCl solution at room temperature. A large amount of pitting is observed, with some of the phases being preferentially corroded. The nobility of Al-Co intermetallic compounds is discussed in terms of chemical composition and crystal structure. Conclusions towards the alloy stability are provided.
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Authors
Marián Palcut, Pavol Priputen, Kristián Å algó, Jozef Janovec,