Corrosivity of Pongamia Pinnata Biodiesel-Diesel Blends on a Few Industrial Metals

Biodiesel fuel has attracted much attention as a carbon neutral fuel because it is made from vegetable oil. Since the research on the compatibility of materials with biodiesels is an emerging field, we have continued our previous investigation “corrosion of metals in biodiesel from pongamia pinnata – (Paper #14143,NACE 2010)” on Pongamia pinnata biodiesel-diesel blends. In this study, the corrosivity of Pongamia pinnata biodiesel and its blends with petroleum diesel on various metals in static condition have been tested by mass loss, linear polarization resistance (LPR) methods. The localized corrosion has been analyzed using laser profilometer.  Based on the results, a user-friendly database of the compatibility of metals in biodiesel obtained from Pongamia pinnata has been generated. This database will be useful to quickly evaluate the corrosion characteristics and compatibility of materials and to develop a new galvanic series of metals in different biodiesels.

Keywords: Biodiesel, Diesel, Corrosion, Pongamia pinnata, industrial metals.