Abstract
Pulse electrodeposited tin coatings are produced from different electrolytic baths (acidic stannous sulfate, alkaline sodium stannate, stannous chloride-citrate, methyl sulfonic acid (MSA), and potassium pyrophosphate based baths). The structure and morphology of the coatings are investigated by X-ray diffraction (XRD), and scanning electron microscopy (SEM). The corrosion resistance of the coatings plated from each bath is investigated by potentiodynamic polarization method. The as deposited samples from each bath are also subjected to room temperature ageing for a period of 1year, and the extent of whisker growth is accessed. The results show that the coating prepared from the citrate bath has the highest corrosion and whisker growth resistance followed by the sulfate bath among all the plating baths investigated.
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