Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: Braic, M., Braic, V., Balaceanu, M., Zoita, C.N., Kiss, A., Vladescu, A., Popescu, A., Ripeanu, R.G.
Editorial: Ed. Elsevier B.V. Elvetia, doi:10.1016/j.matchemphys.2010.12.036, Materials Chemistry and Physics, 126, p.818-825, 2011.
Zr/ZrCN multilayers, with bilayer periods ranging from 4.4 to 70 nm, were deposited on C45 and M2
steels and Si substrates by the cathodic arc technique, in a CH4 +N2 atmosphere. The elemental and phase
composition, modulation periodicity, texture, surface morphology, residual stress, hardness, adhesion,
friction and wear behavior were investigated as a function of bilayer period and C/N ratio using AES,
RBS, XRR, XRD and AFM techniques, surface profilometry, Vickers microhardness and scratch adhesion
measurements, and tribological tests. Two types of Zr/ZrCN multilayers, with high and low C/(C +N)
ratios (0.7 and 0.2, respectively) in the ZrCN sub-layer composition, have been prepared. The investigations
indicated that the microchemical, microstructural, mechanical and tribological characteristics of
the multilayered coatings depended on C/N ratio and bilayer period. For the optimum structure parameters
(bilayer periods in the range 6–13 nm), the tribological performance of the multilayers was found
to be superior to that of the ZrCN monolayers.
Cuvinte cheie: Zr/ZrCN multilayers, Cathodic arc deposition,Composition and structureMechanical characteristics,