- Tytuł:
- The role of β (Al12Mg17) phase on corrosion behavior of the AM90 alloy in NaCl aqueous solution
- Autorzy:
-
Hatakeyama, Masahiko
Shimada, Yusuke
Kawate, Naoki
Sarayama, Kaede
Sunada, Satoshi - Powiązania:
- https://bibliotekanauki.pl/articles/2106606.pdf
- Data publikacji:
- 2022
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
magnesium
corrosion
light alloy - Opis:
- The β phase (Al12Mg17) precipitated by heat treatment in some alloy compositions may result deterioration of corrosion resistance. However, much of its role remains unclear. The effect of the β phase on the corrosion resistance behavior in a NaCl solution was presented in this study. The specimen was Mg-9mass%Al (AM90) alloy and the content of the β phase precipitant was controlled systematically by aging time at 473 K. Area rate of β and lamellar phase in the specimens were 0, 10 and 100%, respectively. According to the results of cathodic polarization curves measurement, the corrosion current density of α phase was 0.215 A/m2 and β phase of it was 0.096 A/m2. While, the specimen includes 10% of β and lamellar phase showed large corrosion current density of 0.251 A/m2. Positive correlation between the β phase and the open circuit potential, suggest that the β phase acts as a cathodic electrode. Moreover, the microstructure after postentiostatic corrosion tests was also support the role of β phase.
- Źródło:
-
Archives of Metallurgy and Materials; 2022, 67, 2; 759--766
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł