Antiwear Action Mechanisms of Colloidal Systems

The main result is that for each type of colloidal additive, the antiwear action starts at the beginning of the test without any induction period. This behaviour, quite different from that 

Compound Aggregate type Aggregates or molecular estimated size(nm) Friction coeffficient 

The rapid build-up of the insulating antiwear film is classically obtained in the presence of the lubricant. The friction, after cleaning, outside the wear trace points out the presence of an adsorbed film of colloidal additive (starting friction coefficient is around 0.18), which is 

---