TY - JOUR

T1 - Corrosion behaviour of a nominally high purity Mg ingot produced by permanent mould direct chill casting

AU - Qiao, Zhixia

AU - Shi, Zhiming

AU - Hort, Norbert

AU - Zainal Abidin, Nor Ishida

AU - Atrens, Andrej

PY - 2012/8

Y1 - 2012/8

N2 - The corrosion behaviour was characterized using hydrogen evolution, weight loss, electrochemical impedance spectroscopy (EIS) and cathodic polarization curves, in 3.5% NaCl saturated with Mg(OH) 2, with tests lasting up to 14days, and compared with the corrosion behaviour of the HP Mg used in our prior research at UQ. The corrosion behaviour was consistent with the uni-positive Mg + ion Mg corrosion mechanism, particularly the fact that the corrosion rate measured using electrochemical techniques was consistently lower than that measured independently by weight loss or hydrogen evolution, as predicted by the uni-positive Mg + ion Mg corrosion mechanism.

AB - The corrosion behaviour was characterized using hydrogen evolution, weight loss, electrochemical impedance spectroscopy (EIS) and cathodic polarization curves, in 3.5% NaCl saturated with Mg(OH) 2, with tests lasting up to 14days, and compared with the corrosion behaviour of the HP Mg used in our prior research at UQ. The corrosion behaviour was consistent with the uni-positive Mg + ion Mg corrosion mechanism, particularly the fact that the corrosion rate measured using electrochemical techniques was consistently lower than that measured independently by weight loss or hydrogen evolution, as predicted by the uni-positive Mg + ion Mg corrosion mechanism.

KW - A. Magnesium

KW - B. EIS

KW - B. Polarization

KW - B. Weight loss

KW - C. Negative difference effect

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84861946150&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2012.04.030

DO - 10.1016/j.corsci.2012.04.030

M3 - Journal articles

AN - SCOPUS:84861946150

VL - 61

SP - 185

EP - 207

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -