Table 1.

Corrosion potential and corrosion current density of Zn alloys are obtained from PDP curves.

Samples	Corrosion potential (V. vs. SCE)	Corrosion current density
As-extruded	-1.27	1.95 × 10−5 (A/cm2)
Immersion for 30 days	-1.31	1.91 × 10−5 (A/cm2)
Immersion for 90 days	-1.32	1.66 × 10−5 (A/cm2)
Immersion for 180 days	-1.32	1.78 × 10−5 (A/cm2)