Sensitivity of the Ni-W nanocomposite doped amorphous nano-SiO2 particles to the electrolysis pH

In spite of the nanoscale coatings progress,the effect of bath ph on nano silica zeta potential,surface morphology and electrochemical behavior of pulse electroplated ni-w/sio2 nanocomposite from citrate-ammonia media were investigated. zeta potential curve and sem analysis shows that the nanocomposite coatings obtained were smoother,more compact and with finer grain size. corrosion resistance and electrochemical behavior into 3% nacl media were discussed. the enhancement of the ni-w/sio2 nanocomposite has been referred to the mechanism of the formation of the nanoparticles adions double layer.