Chemical imaging of wear scars

Contribution from N. Spencer (Switzerland)

XPS chemical state map of the O(1s) signal. Two wear scars are visible produced at 1 N and 10 N load in ZnDTP containing lubricant. Map b) shows areas with typical oxide type O(1s) spectra, map c) shows the wear scars with a phosphate type O(1s) spectra. (Eglin, M., Rossi, A. and Spencer, N.D., in Proc. 28th Leeds-Lyon Symp., Vienna 2001, Edited by Dowson et al., in press)