Comparative studies of microstructural, tribological and corrosion properties of Zn-TiO2 and Zn-TiO2-WO3 nano-composite coatings
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Nano sized composites of Zn-TiO2 and Zn-TiO2-WO3 were produced via electrocodeposition on plain carbon
steel. The effect of input current on the microstructure, mechanical strengthening and corrosion
properties were compared. The morphological features of the composite coatings were characterized
by scanning electron microscope (SEM) equipped with energy dispersive spectrometer (EDS); mechanical
properties were carried out using a diamond base Dura Scan hardness tester and CERT UMT-2 multifunctional
tribological tester. The corrosion properties were investigated by potentiodynamic studies
in 3.5% NaCl. The result showed that the coatings exhibited good stability and the particle loading of
WO3 greatly enhanced the microstructural properties, hardness behaviour and corrosion resistance of
the coatings.
Keywords
T Technology (General), TJ Mechanical engineering and machinery