Abstract
Corrosion and erosion of mild steel in water containing 3% sodium chloride with relative velocities of 1-6m/sec at 30°C were studied by using a rotor-type testing apparatus. The results obtained were summarized as follows: (1) The corrosion rates of mild steel increased markedly when sand particles were added to the solution, and the effect of sand particles was promoted with the increase of relative velocity. (2) Mild steel was protected almost completely by supplying cathodic current, even in the case of containing sand particles in the solution. (3) The current densities required for the complete protection increased markedly when sand particles were added to the solution.
