Based on preliminary trials, the size of the window and slide length were chosen to minimize noise observed with shorter windows, but to allow differentiation of patterns in different regions.
After 1100 forgings the TiN/TiAlN (Balzers, Futura) multilayer coating remained practically undamaged on the front side, while it was partially worn at the roundings of the tool, in the area of the largest sliding lengths.
In particular, we show that using our comprehensive parameter estimation, our model displays similar behaviour as in (Elf et al., 2007), i.e. residence time of tR=5 ms, actual sliding lengths of slobs=90 bp, the relative time the molecules stays bound to the DNA of f=0.9 and the 1D diffusion coefficient of 0.046 μm s−1.
The bubble sliding length at the tube top was found to decrease and at the tube bottom was found to increase with an increase in the inclination angle.
Present work is an attempt to explain and analyse friction at different length scales, i.e., different magnitudes of load, pressure and sliding length.
Tests results are the Coulomb's coefficient of friction, SEM-EDS and roughness measurement of the tool surfaces after a sliding length of 40 mm.
The compound layer on the surface of the gas nitrided tool steel is entirely removed during sliding contact with aluminium after a sliding length of 3900 m, under a contact load of 60 N exposing the underlying diffusion zone to the aluminium counterface.
Pin-on-disc wear tests, carried out at constant load and speed, showed that sulfur implantation of the discs had a pronounced wear-reducing effect, leading to an up to three times longer sliding length before breakdown of the lubricating system (scuffing).
Coatings with a low amount of Mo composed of nanograins of carbides dispersed in a-C matrix exhibit low values of μ ≈ 0.07 and k ≈ 10− 7 measuredeasured with WC ball at the rotation speed v = 0.05 m/s, total sliding length l = 1000 m and the load L = 2 N.
