Effect of heat treatment on zinc whisker growth fromelectrodeposited coatings

摘要

The effects of simple heat treatments on electrodeposited zinc coatings formed onrnmild steel substrates were examined. It was found that over a temperature range ofrn50-200°C for 1 and 24 h periods zinc whisker growth was evident. The additionalrneffects of electrodeposited coating thickness and subsequent chromium-basedrnpassivation processes were also examined in terms of their effect on whisker growth.rnIndividual whisker morphologies were investigated utilising a field emission gunrnscanning electron microscopy (FEGSEM) and focused ion beam field emission gunrnscanning electron microscopy (FIB-FEGSEM).