@ARTICLE{Hatakeyama_Masahiko_The_2022, author={Hatakeyama, Masahiko and Shimada, Yusuke and Kawate, Naoki and Sarayama, Kaede and Sunada, Satoshi}, volume={vol. 67}, number={No 2}, journal={Archives of Metallurgy and Materials}, pages={759-766}, howpublished={online}, year={2022}, publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences}, publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences}, abstract={The β phase (Al 12Mg 17) 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.}, type={Article}, title={The role of β (Al 12Mg 17) phase on corrosion behavior of the AM90 alloy in NaCl aqueous solution}, URL={http://journals.pan.pl/Content/123326/PDF/AMM-2022-2-47-Hatakeyama.pdf}, doi={10.24425/amm.2022.137815}, keywords={magnesium, corrosion, light alloy}, }