THE INFLUENCE OF SURFACE FREE ENERGY ON TRIBOLOGICAL PROPERTIES OF OXIDE LAYER S FORMED ON ALUMINIUM ALLOY EN AW-5251

This paper presents the influence of the parameters of the formation of oxide layers on the surface free energy and the tribological properties of these layers. The layers were formed electrochemically on aluminium alloy...

APPLICATION OF THE CENTRAL COMPOSITE ROTATABLE DESIGN IN THE OPTIMISATION OF PARAMETERS OF A BALL-CRATERING METHOD

This article presents an outline of a method of planning an experiment known as the central composite rotatable design (CCRD) for the optimisation of processes and as an example of its application in the optimisation of...

THE INCREASE OF PLOUGHSHARE TEMPERATURE AS THE EFFECT OF SOIL FRICTION DURING WORK

The surface temperature of ploughshares was measured during ploughing carried out in two conditions. Measurements were taken at two points on the surface of ploughshare using a contact thermometer and by means of thermal...

A CRYSTAL CHEMICAL APPROACH IN ANTI-WEAR COATING’S DESIGN

The possibility of composing hard coatings with self-lubricating features is one of the most important problems in tribology. The production of new coating architectures based on nanocomposite or multilayered morphologie...

Analysis of phenomena in real contact spots due to dynamic force under tangential micromotion