Electroless Coating of Fly Ash Cenosphere through Ni-P Alloy

Cenospheres are often been used as multi-functional fillers because of good performance. The electroless Ni-P-coating process is modified by replacement of the conventional PdCl_2 activator with AgNO_3 activator. The cenosphere particles are characterized through X-ray diffraction analysis (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) during and after the coating process. Ni-P-coating is obtained over fly ash cenospheres using the electroless coating technique with AgNO_3 activator. The possible mechanism of electroless Ni-P-coating of cenosphere particles with AgNO_3 activator is suggested.