Comparative corrosive characteristics of petroleum diesel and palm biodiesel for automotive materials

article i nfo Corrosive characteristics of biodiesel are important for long term durability of engine parts. The present study aims to compare the corrosion behavior of aluminum, copper and stainless steel in both petroleum diesel and palm biodiesel. Immersion tests in biodiesel (B100) and diesel (B0) were carried out at 80 °C for 1200 h. At the end of the test, corrosion characteristic was investigated by weight loss measurements and changes on the exposed metal surface. Surface morphology was examined by optical microscope and scanning electron microscopy with energy dispersive X-ray analysis (SEM/EDS). Fuels were analyzed by using TAN analyzer, FTIR, GCMS and ICP in order to investigate the acid concentration, oxidation level with water content, compositional characteristics and presence of metal species respectively. Results show that the extent of corrosion and change in fuel properties upon exposure to metals are more in biodiesel than that in diesel. Copper and aluminum were susceptible to attack by biodiesel whereas stainless steel was not.

[1]  G. Mankowski,et al.  The pit morphology on copper in chloride- and sulphate-containing solutions , 1997 .

[2]  S. P. Hutton,et al.  MASS TRANSFER EFFECTS OF NON-CAVITATING SEAWATER ON THE CORROSION OF CU AND 70CU-30NI , 1990 .

[3]  Robert O. Dunn,et al.  Effect of antioxidants on the oxidative stability of methyl soyate (biodiesel) , 2005 .

[4]  Ado Jorio,et al.  Biodiesel compatibility with carbon steel and HDPE parts , 2009 .

[5]  S. Avner.  Introduction to Physical Metallurgy , 1964 .

[6]  De-Hao Tsai,et al.  CO Oxidation Behavior of Copper and Copper Oxides , 2003 .

[7]  M. A. Fazal,et al.  Effect of temperature on tribological properties of palm biodiesel , 2010 .

[8]  G. S. Cole,et al.  Light weight materials for automotive applications , 1995 .

[9]  U. R. Evans,et al.  The Corrosion and Oxidation of Metals: Scientific Principles and Practical Applications , 1960 .

[10]  Donald T. Eadie,et al.  Laboratory study of the tribological properties of friction modifier thin films for friction control at the wheel/rail interface , 2005 .

[11]  Thomas T. Adams,et al.  Storage stability of poultry fat and diesel fuel mixtures: Specific gravity and viscosity , 2008 .

[12]  Corrosion Engineering,et al.  Corrosion engineering , 1979 .

[13]  Robert L. McCormick,et al.  Several factors affecting the stability of biodiesel in standard accelerated tests , 2007 .

[14]  J. Golob,et al.  Microorganisms in Diesel and in Biodiesel Fuels , 2007 .

[15]  Carl-Johan Fogelholm,et al.  Emissions from large-scale medium-speed diesel engines: 2. Influence of fuel type and operating mode , 2008 .

[16]  Mauro Sgroi,et al.  BIOFEAT: Biodiesel fuel processor for a vehicle fuel cell auxiliary power unit ☆: Study of the feed system , 2005 .

[17]  I. Gawel,et al.  Oxidized rapeseed oil methyl ester as a bitumen flux: Structural changes in the ester during catalytic oxidation , 2007 .

[18]  Md. Abdul Maleque,et al.  Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant , 2000 .

[19]  Shinichi Goto,et al.  Japanese Standards for Diesel Fuel Containing 5% FAME: Investigation of Acid Generation in FAME Blended Diesel Fuels and Its Impact on Corrosion , 2006 .

[20]  A. K. Gupta,et al.  Corrosion behavior of biodiesel from seed oils of Indian origin on diesel engine parts , 2007 .

[21]  S. Keera,et al.  Corrosion of copper metal in distillation process , 1998 .

[22]  Eric W. Thomas,et al.  Fluoroelastomer Compatibility with Biodiesel Fuels , 2007 .

[23]  Amit Sarin,et al.  Influence of metal contaminants on oxidation stability of Jatropha biodiesel , 2009 .

[24]  Hatim Machrafi,et al.  An experimental and numerical analysis of the influence of the inlet temperature, equivalence ratio and compression ratio on the HCCI auto-ignition process of Primary Reference Fuels in an engine , 2008 .

[25]  Jenő Hancsók,et al.  Development of multifunctional additives based on vegetable oils for high quality diesel and biodiesel , 2008 .

[26]  J. M. Von Würtemberg,et al.  Lightweight materials for automotive applications , 1994 .

[27]  L. Grainawi,et al.  Testing For Compatibility Of Steel With Biodiesel , 2009 .

[28]  Robert L. McCormick,et al.  Operating Experience and Teardown Analysis for Engines Operated on Biodiesel Blends (B20) , 2005 .

[29]  M. A. Fazal,et al.  Corrosion characteristics of copper and leaded bronze in palm biodiesel , 2010 .