Abstract
Electroless Cu-coating of fly ash cenosphere particles is demonstrated in the present investigation. The electroless Cu-coating process is modified by replacing the conventional PdCl 2 activator with AgNO 3 activator to reduce the overall cost of the coating process. The cenosphere particles are characterized by scanning electron microscope, energy dispersive spectroscopy, auger electron spectroscopy (AES), X-ray diffraction analysis, and focussed ion beam (FIB) microscopy during and after the coating process. Relatively uniform and continuous coating thickness of ∼350 nm is obtained under the given coating conditions. The possible mechanism of electroless Cu-coating of cenosphere particles utilizing AgNO 3 activator is suggested. Cu-coated fly ash particles find applications in manufacturing conducting polymers for EMI-shielding applications.
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