Electrodeposition of zinc-SiO2 composite

The incorporation mechanism of SiO2 particles into zinc electrodeposit is d iscussed. The SiO2 particles precipitate in two ways on the (00-1)(eta) of zinc electrodeposit: by lined up particles along the laterally growing macr osteps on the (00.1)(eta) and by randomly dispersed particles on the (00.1) (eta). These particles incorporate into the electrodeposits by following tw o processes. The sidewalls of particles are incorporated into the macrostep s at the edge of (00.1)(eta). The bottom of randomly dispersed particles ar e incorporated into the (00.1)(eta) probably by the atomic steps. (C) 2000 The Electrochemical Society.