Effect of amount of antimony on sliding wear resistance of white metal

Sliding wear tests were performed under lubricant oil using different white metals with various amounts of antimony (Sb) ranging from 5 to 23 wt% in order to study the effect of amount of antimony on the sliding wear resistance of the white metals. The results showed that the sliding wear resistance is not affected by the amount of antimony within a range 5–18 wt%, however the resistance is lowered at the higher amount of antimony, i.e., Sb>18 wt%. The amounts of wear of the white metals were analyzed by the wear constitutive law, which was proposed by Ishihara et al. The sliding wear lives for the different amounts of wear were successfully estimated using the above constitutive law. The estimated results showed good agreement with the experimental ones. A SEM study (Scanning Electron Microscope) and an EPMA study (Electron Probe Micro Analyzer) were also performed to study the effects of amount of Sb on the sliding wear surfaces of the specimen during the sliding wear process of the white metals.