Erosion–corrosion of chromium steel in a rotating cylinder electrode system: some comments on particle size effects

The effect of particle size on the erosion–corrosion response of a Cr containing steel in NaOH was studied in a rotating cylinder electrode system. The results showed that for the same addition of particles by weight, the corrosion rate in the presence of erosion was independent of particle size. However, the erosion–corrosion rate appeared to be dependent on particle sizes for size ranges from 50 to 100 μm but above this value, this dependence was reduced. Erosion–corrosion mechanism and wastage maps were constructed based on the results showing the variation in erosion–corrosion regimes, as a function of particle size and electrochemical potential.