Study of particle incorporation and performance characteristic of aluminium silicate-zirconia embedded on zinc rich coatings for corrosion and wear performance

Abstract

Composite coatings of Zn-Al6O13Si2 and Zn-Al6O13Si2-ZrO2 were electroplated on mild steel from Zn2+ ions bath and homogeneously dispersed nano Al6O13Si2-ZrO2 particulates were achieved. The corrosion resistance characteristics of the deposited coatings were evaluated by linear polarization method. The microstructural properties of the multilayer produce coatings were examined by scanning electron microscope equipped with energy dispersive spectrometer, X-ray diffraction and atomic force microscope. The thermal deformation were observed in 250 ?C for 4 h and mechanical properties of the composite coatings were investigated using diamond base Dura scan microhardness tester. From the observed results, it was shown that the incorporation of particles into the electrolyte change the microstructure characteristics of developed composite and improved drastically the thermomechanical performance of the coatings.