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Corrosion Mechanism Of Copper In Palm Biodiesel
Corrosion Mechanism Of Copper In Palm Biodiesel
A.S. Md Abdul Haseeb
Biodiesel is a promising alternative fuel. However, it causes enhanced corrosion of automotive materials, especially of copper based components. In the present study, corrosion mechanism of copper was investigated by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Compositional change of biodiesel due to the exposure of copper was also investigated. Corrosion patina on copper is found to be composed of Cu2O, CuO, Cu(OH)2 and CuCO3. Dissolved O2, H2O, CO2 and RCOO- radical in biodiesel seem to be the leading factors in enhancing the corrosiveness of biodiesel. © 2012 Elsevier Ltd.
Stress Enhanced Tio2 Nanowire Growth On Ti-6al-4v Particles By Thermal Oxidation
Stress Enhanced Tio2 Nanowire Growth On Ti-6al-4v Particles By Thermal Oxidation
A.S. Md Abdul Haseeb
Titanium dioxide (TiO2) nanowires were grown on Ti - 6wt% Al - 4wt% V (Ti64) particles by thermal oxidation. To investigate the effect of stress on nanowire growth, the particles were milled in a planetary ball mill prior to the thermal oxidation. Thermal oxidation of the Ti64 particles was carried out in a horizontal tube furnace in a controlled oxygen atmosphere in the temperature range of 700-900 °C. The oxygen concentration was varied from 20 ppm to 80 ppm in Ar atmosphere. Nanostructures were characterized by high resolution field emission scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction. TiO2 …