1996 Volume 82 Issue 1 Pages 41-46
Several kinds of steels were subjected to slurry wear tests using a electrochemically instrumented apparatus which consisted of a rotating cylindrical disc attaching four samples with various Galvanic couples. Each sample were rotated in a slurry of quartz sand (50%) and water. Abrasion behavior was determined by weight loss and observed by scanning electron micrography as functions of hardness and chemistry. The effect of electrochemical behavior on slurry wear could be evaluated by means of various Galvanic couples. Its abrasion depended not only on hardness of steels but also on potential difference between them, so that slurry wear was suppressed by cathodic protection. Abrasion resistance was improved by increasing hardness HRC and chromium content and decreasing carbon content and potential difference E, and the regression equation describing these effects on erosion loss EL was obtained as follows;EL=-1.58HRC+4.65%C-4.82%Cr+0.073E(mV)
