Influence of composition and process conditions on corrosion of Pb-Sn-Ca Alloys in Lead- Acid battery positive grid

In the recent years, Pb-Sn-Ca as dominant alloy uses for production of lead-acid battery positive grid. Regards on corrosion phenomenon as one of the most critical battery aging ingredient, theeffects of alloying elements and process conditions on corrosion properties of positive grid have been studied. This study has been done on the Pb-Sn-Ca alloy which produced by different percentage of tin and calcium, also different rolling temperatures and cooling rates. For quantitative analysis, microstructure characterizing and tafel polarization test, quantometer, optical microscope andIVIUMSTAT device have been used respectively. The results have been shown that reduction in calcium and increasing in tin, led to the corrosion properties improvement. Similarly enhancement of cooling rates and decreasing in rolling temperatures had significant effects oncorrosion resistance increment

کلیدواژه ها:

Corrosion ، Lead-Acid battery ، Pb-Sn-Ca alloy ، Rolled grids