Study of effect of liquid corrosivity in liquid-solid impingement on cast iron and austenitic stainless steel

This paper presents the results of a series of electrochemically based tests under liquid-solid erosion conditions on a flake graphite cast iron and an austenitic stainless steel, UNS S31603. The main aim of the work was to assess the effect of fluid corrosivity on the components of deterioration owing to corrosion, erosion, and a synergistic factor. Tests were conducted in 3·5%NaCl at two temperatures (30 and 50°C) and, in addition, in a low total dissolved solids (0-05%) solution. The results have shown that the effect of fluid corrosivity is complex and is significantly different from corrosivity in static conditions. Important practical aspects relating to material selection in conditions where both erosion and corrosion are prominent are discussed. © 1997 The Institute of Materials.