Jet Slurry Corrosive Wear of High-Chromium Cast Iron and High-Carbon Steel Grinding Ball Alloys

Abstract

Samples of high-chromium cast iron and high-carbon steel grinding balls were subjected to jet slurry impingement in an electrochemically instrumented apparatus. The jet velocity was 6.6 m/s. Quartz and chalcopyrite slurries containing 15% solids were used at pH values ranging from 5 to 11. Pure wear rates were obtained by cathodic protection, while pure corrosion rates were obtained by the polarization resistance technique. A synergistic effect was found between corrosion and wear.