Friction: An Introduction to Tribology

adhesion alloys Amontons area of contact asperities automobile ball bearing behavior body boundary lubricants brake material chains chemical coefficient of friction copper surface crystal Curve diamond effect elastic hysteresis electron energy engine EP additive example factor fatty acid fibers flat force F fragments fric friction junctions frictional force grease groove hard metal hard steel high temperatures high vacuum hydrodynamic lubrication hysteresis losses increase interface junction growth laws of friction layer lignum vitae liquid low friction lubricant film mechanism melting point microinches mineral oil move normal load occurs oxide film oxygen particles piece polished polymer pressure produce properties PTFE pull real contact reduce rolling friction rubber rubbing shaft shear Ski Wax sliding friction Sliding speed sliding surfaces slopes smooth soft softer metal solid static friction steel surface structure surface films surface roughness thin tion tire tribological tungsten carbide unlubricated viscosity wear weight wood