AN INVESTIGATION ON CORROSION AND WEAR BEHAVIOR OF AUTOMOTIVE MATERIALS

Corrosive and wear characteristics of biodiesel are important for long term durability of engine parts. The present study aims to compare the corrosion and wear behavior of aluminum and cast iron in both diesel and biodiesel. Immersion tests in biodiesel (B100) and diesel (D100) were carried out at 30°C for 1300 h. At the end of the test, corrosion characteristic was investigated by weight loss measurements and changes on the exposed metal surface. Surface morphology and Energy dispersive x-ray analysis was examined by scanning electron microscopy with energy dispersive X-ray analysis (SEM/EDAX). The Results show that the extent of corrosion and change in fuel properties upon exposure to metals are more in biodiesel than that in diesel. Wear tests are performed for variety of reason, characterize materials and to select material for specific applications. To investigate the friction an wear behavior of bio diesel based lubricant variants pin on disc tribometer (Ducom). Before conducting each experiment acetone was used to ensure that the surface are cleaned properly. The base lubricant acted as a very good lubricant additives which reduces the friction and wear rate during the test. Compared to all other lubricant new lubricant which protects metal to metal contact leading towards minimum coefficient of friction.