Optimization and thermal stability of TiAlN/Mo multilayers

Abstract

In this work we focus on the optimization and thermal stability of nanocomposite TiAlN/Mo multilayers that were produced by reactive magnetron sputtering on high-speed steel substrates, with modulation periods below 5 nm. These multilayers were annealed between 600-900 8C for 1 h in a vacuum furnace. Preliminary X-ray results reveal that these coatings are very stable up to 900 8C, since the multilayer chemical modulation is not severely affected. At intermediate annealing temperatures the modulation period decreases due to interdiffusion at the interface, resulting in a thicker interface between metal/nitride and hence decreasing the thickness of those layers. D

The Effect of Bilayer Periods and Their Thickness in Magnetron Sputtering Protective Multilayer Coatings for Tribological Applications

“…The hardness of the CrN and CrAlN monolayers are, respectively, 22 and 27 GPa which are lower than that of multilayers coatings. These results are in a good correlation with other studies ( Ref 15,[36][37][38]. The increase of hardness and YoungÕs modulus of the multilayers can be explained by the decrease of each monolayer thickness and the use of multilayer coatings with thicknesses of few decade or hundred nanometers.…”

Thick CrN/NbN Multilayer Coating Deposited by Cathodic Arc Technique

“…Moreover, the diffraction patterns show a strong central peak, and a group of satellite peaks on its vicinities with gradually decreasing intensities. The central peak is located at 2θ = 42.5°, and the first order satellite peaks are visible at both sides of the central peak, as predicted in the literature [33][34][35] . Periodicity and average d-spacings for the coatings thinner than 10 nm were calculated based on the formulation described by Segmüller and Blakeslee 36 .…”

Effect of periodicity on hardness and scratch resistance of CrN/NbN nanoscale multilayer coating deposited by cathodic arc technique

“…The existence of better defined interfaces between the individual components is further supported by the satellite reflections in the high angle X-ray diffraction pattern in Fig. 4 [37].…”

“…The existence of well-defined satellite peaks indicates good coating crystallinity, as well as good chemical modulation of the multilayer [24][25][26]30].…”