Abstract
Isogeometrical phosphorus compounds, used as model oil additives, were selected to study the role of sulfur and phosphorus under increasingly severe lubrication conditions. A modified commercial test device has been applied to measure friction and wear. Application of Auger electron spectroscopy leads to a better understanding of the beneficial role of AW/EP additives. A general mechanism resulting in the formation of acid phosphates is proposed as the first step of tribofragmentation. Phosphorus seems to be mainly responsible for the load-carrying capability of reaction layers under the present experimental conditions. A reduction in the phosphorus concentration immediately leads to an increase of friction and wear.
Presented at the 37th Annual Meeting in Cincinnati, Ohio, May 10–13, 1982
Notes
Presented at the 37th Annual Meeting in Cincinnati, Ohio, May 10–13, 1982