... re-use rights only Energy Hardness Impact wear Empirical model Nomenclature a_c (i) = contact circle radius at time t_i; A(i, j) = Area of element j at time t_i; C_n, C_t = Normal...

... found that the essence of excellent tribological properties of the new ring seal lies, in its low value of surface free energy (SFE) of titanium nitride coating on the piston ring and in its high value of energy which is the characteristic of the nitrided surface of the cast iron cylinder sleeve...

... to be useful information on the tribology of greases. © MCB UP Limited 1999 Lubricants Greases Rheology Energy Stress If we have a look at a grease volume element, there are two interesting macrogeometrical properties from the tribological point of view: first, the material behaviour...