Avtor/Urednik		Panjan, P; Navinšek, B; Cvelbar, A; Zalar, A; Vlcek, J
Naslov		High-temperature oxidation of Tin/CrN multilayers reactively sputtered at low temperatures
Tip		članek
Vir		Surf Coat Tech
Vol. in št.		Letnik 98
Leto izdaje		1998
Obseg		str. 1497-502
Jezik		eng
Abstrakt		The high-temperature (600-850 degrees C) oxidation of multilayer hard TiN/CrN coatings was investigated. TiN/CrN multilayer coatings (2.6 micro m thick) with modulation periods i the range 83-425 nm were deposited at low temperatures (150 degrees C) onto polished tool steel discs and polished alumina ceramic substrates (Ra = 25 nm) using the plasma-beam sputtering technique. The oxidation rate was obtained from the weight gain as a function of the oxidation time. The activation energy for oxidation of TiN/CrN multilayers was determined and compared with that for CrN, TiN and CrTiN coatings. The depth profiles of samples oxidized at various temperatures were examined by Auger electron spectrometry (AES) and glow discharge optical spectrometry (GDOS) to determine the thickness and the composition of the oxide layer. The morphology of the oxidized coatings was investigated by scanning electron microscopy (SEM). Continuous in-situ electrical resistivity measurements were perfomed on the same coatings to detect grain-boundary oxidation. The adhesion and microhardness of the multilayers were also determined.
Deskriptorji		ALLOYS TITANIUM NICKEL CHROMIUM CERAMICS SPECTROPHOTOMETRY MICROSCOPY, ELECTRON, SCANNING