Abstract
The addition of various extreme pressure and antiwear additives in lubricating oil is an important and effective way of reducing friction and wear. The application of chemico-thermal treatments on surface of materials is another effective way of improving the tribological behaviour of rubbing pairs. The synergistic effects of oil additive sulphurized olefin, with sulphurized, nitrided and oxynitrided surfaces of 1045 steel, on the tribological behaviour have been systematically studied on a ball-on-disc testing machine. Increasing load bearing capacity and friction reduction results have been obtained. The mechanism of this synergistic effect is discussed based on the microanalysis of the surface film using AES and XPS.
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