Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Materials Science Poland

1 2009

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

The effect of electromagnetic stirring on the microstructure and corrosion of mischmetal modified AZ91D magnesium alloy

Jin Y. X., Hua L., Xu X., Peng Q.

Materials Science Poland

2009

Vol. 27, No. 1

171--185

The microstructure and corrosion behaviour of mischmetal modified AZ91D magnesium alloy in the presence or absence of a rotating electromagnetic field have been investigated. The study suggests that the size and volume fraction of the ? (Mg17Al12) phase in the alloy decreases as magnetic field intensity increases. The immersion test results show that the mass loss for the alloy solidified in the absence of a magnetic filed is always larger than that for the alloy solidified under magnetic field. The electrochemical corrosion experiments indicate that the corrosion potential of the alloys increases from -1.56 to -1.51 V, while the corrosion current density decreases from 6.31 to 1.58 mAocm-2, and the charge transfer resistance increases from 3.17 to 11.32 k?ocm2 as the excitation voltage increases from 0 to 120 V. The enhancement of the corrosion resistance is attributed to the grain refinement, and to the volume fraction reduction of the ? (Mg17Al12) phase under a rotating electromagnetic field.