THE ROLE OF β(Al12Mg17) PHASE ON CORROSION BEHAVIOR OF THE AZ91 ALLOY IN NaCl AQUEOUS SOLUTION.

Autor: HATAKEYAMA, M., SHIMONO, K., IWASHIMA, D., SAIKAWA, S., SUNADA, S.
Předmět:
Zdroj: Archives of Metallurgy & Materials; Mar2017, Vol. 62 Issue 1, p155-158, 4p
Abstrakt: The effect of the βphase (Al12Mg17) on the corrosion resistance in a NaCl solution was investigated by electro chemical methods.Volume fraction of βphase in each specimen was controlled systematically by isothermal annealing at 473 K as 0%, 4%, 22% and 100 %, respectively. Although α phase shows lower corrosion current density than that of βphase, the α /βmixed phase specimen showed higher corrosion current density than that of α phase.It strongly suggests that βphase act as cathodic electrode in the alloys. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index