AbstractA method based on Rutherford back-scattering ofα-particles was used for the investigation of tin coatings electrolytically applied to low carbon steel strip. The method allowed the investigation of the distribution of tin atoms through the thickness of the coating to a depth of a few micrometres. The results obtained show that the treatment applied to prepare the steel surface for coating has a marked effect on the final composition of the deposited layer. In particular, the omission of the final water rinsing led to the formation of a denser layer and, as a result, to an increased corrosion resistance of the coated strip.MST/1172