Corrosion activity laser treated aluminum-12 % silicon alloy with fe and Ti powders at two different energies

Abstract EN

-In This work, the corrosion activity of laser treated almium-12%silicon alloy was tested.

The addition of Fe and Ti as elemental powders was studied.

Two different laser energies of 750 and 1000 kJ were used.

Corrosion measurements by potential static at 3mV.sec-1in condensed synthetic automotive solution.

The corrosion data show that laser treatment led to increasing corrosion resistance due to smoothness of the surface alloy because of high energy, and the corrosion resistance in the presence of Fe and Ti powders better than that in the absence of metallic powders were increased from (8.416 Ω.cm2( to )11.216 Ω.cm2( whereas corrosion rate decreased from (1.3194) to (0.7615) of specimens which laser treated with present Ti compared with as received , and the corrosion resistance increase with increasing laser energy.