Ellipsometric surface analysis of wear tracks produced by different lubricantsEllipsometric analyses of wear tracks in berings of M-50 steel were carried out after operation under severe conditions with different lubricant additives. The base lubricant was a synthetic ester. It was found that the surface and wear additives benzotirazole and tricresylyphosphate produced very patchy oxide layers. Dioctyldiphenylamine, a common antioxidant, on the other hand produced smoother films. The analyses were performed with a specially designed and constructed ellipsometer of very high (20 micron) spatial resolution. The results are consistent with data obtained by Auger electron spectroscopy.
Document ID
19860026278
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lauer, J. L. (Rensselaer Polytechnic Inst. Troy, NY, United States)
Marxer, N. (Rensselaer Polytechnic Institute, Troy, NY, United States)
Jones, W. R., Jr. (NASA Lewis Research Center Cleveland, OH, United States)