Abstract
Galfan I and Galfan II doped with calcium, Â Corrosion Resistant Alloys
Reza Amini Najafabadi*1, Missam Irani1, Izatulla Ganiev2, Ziadulla Obidov2
DOI : http://dx.doi.org/10.13005/ojc/300307
Abstract:
The results of electrochemical research on Zn5Al and Zn55Al alloys, doped with Calcium in the different concentration of natural ambient using Potentiodynamical method, indicate that, adding Calcium Ree due to move pitting and repassivation potentials to the positive area, and increasing concentration of chloride ions moves curves to the negative region. It is estimated that the small amount of Ca (0.005–0.05 wt %) reduce Corrosion rate of original alloy about 2-3 times. It means that the corrosion resistance of the Zn5Al and Zn55Al alloys improves considerably. Zn-Al-Ca alloy could be used as anode coatings to protect steel products and structures from corrosion.
Keywords:Zn5Al; Zn55Al; corroson resistant; calcium; natural Ambient; NaCl
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