A scanning Auger microprobe (SAM) investigation was performed to determine the spatial distribution of species produced during boundary lubrication at a steel-on-steel interface. Some correlations were made with the severity of wear as determined by a modified cup-block ASTM-EP lubricant test. Tested extreme-pressure (EP) additives include zinc di-isodecyldithiophosphate (ZDP), hexadecyl diethyldithiocarbamate (HDDC), and benzyl disulfide (BD).
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Debies et al. (1980) studied this question.
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