PT Journal
AU Bakalova, T
   Petkov, N
   Bahchedzhiev, H
   Louda, P
TI Tribology of Titanium-Aluminium Base Nanomultilayer Coatings
SO Manufacturing Technology Journal
PY 2016
BP 859
EP 864
VL 16
IS 5
DI 10.21062/ujep/x.2016/a/1213-2489/MT/16/5/859
DE cathodic arc evaporation; multilayer; wear rate; process fliud; friction coeficient
AB The article presents investigation of the trybological properties, particularly dry friction and friction using a process fluid, of friction pairs of steel ball against titanium-aluminium base nanomultilayer (NML) coatings. The coatings are deposited by cathodic arc evaporation of both pure titanium and aluminium with eighteen percent silicon cathodes. Each multilayer structure consists of 49 bi-layers. The external deposited layeris with five times longer growing period. The coatings are deposited at the temperature of 400°C and the work pressure of 2 Pa. Polished steel discs (O 20 mm * 5 mm thick) are used as the substrate material. The measured dry friction coeficients are in the range of 0.216 - 0.356 and the coefficients friction using process fluid is in the range of 0.085 - 0.151. The calculated wear of the counter-body is in the range of (0.66/ 4.21)*10-3 mm3, asit depends on the friction conditions and the used multilayer coating.
ER