Journal ArticleDOI
High-temperature oxidation resistance of Cr1−xAlxN thin films deposited by reactive magnetron sputtering
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TLDR
The thermal stability of Cr1−xAlxN thin films with 0≤x≤0.63 has been investigated by isochronal (15 min) heating in air at various temperatures up to 1173 K.Abstract:
The thermal stability against oxidation of Cr1−xAlxN films with 0≤x≤0.63 has been investigated by isochronal (15 min) heating in air at various temperatures up to 1173 K. Cr1−xAlxN thin films were deposited by reactive magnetron sputtering from Cr and Al targets in a mixed Ar/N2 atmosphere at a substrate temperature of 573 K. All the films crystallize in the pseudo binary, rocksalt-type cubic structure, showing a (111) preferential orientation. Oxidation proceeds by de-nitridation and the formation of a pseudo binary, mixed, Cr/Al oxide with the corundum structure. The degree of film oxidation was evaluated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Rutherford backscattering spectroscopy (RBS). The substitution of Cr atoms by Al atoms leads to two oxidation behaviors. Cr1−xAlxN films with low Al content (x 0.2) are more resistant to high temperatures compared to pure CrN. Films with the highest Al content (x=0.63) are stable up to 1173 K due to the formation of an amorphous, aluminum-rich oxide which blocks oxygen diffusion and prevents further film oxidation.read more
Citations
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Journal ArticleDOI
A comparative study of reactive direct current magnetron sputtered CrAlN and CrN coatings
TL;DR: In this article, the structural and mechanical properties of CrN and CrAlN coatings were characterized using X-ray diffraction (XRD) and nanoindentation techniques, respectively.
Journal ArticleDOI
Thermal stability of Al-Cr-N hard coatings
Herbert Willmann,Paul H. Mayrhofer,Paul H. Mayrhofer,Per Persson,Per Persson,A.E. Reiter,Lars Hultman,Lars Hultman,Christian Mitterer +8 more
TL;DR: In this article, the authors investigated the reaction of arc-evaporated cubic Al0.7Cr0.3N hard coatings in Ar up to 1450 °C.
Journal ArticleDOI
Comparison of tribological behaviours of AlCrN and TiAlN coatings—Deposited by physical vapor deposition
TL;DR: In this paper, the tribological properties of AlCrN and TiAlN were investigated for sliding and ball-on-disc wear tests against 4-mm diameter Si 3 N 4 balls on CETR UMT-2 test system.
Journal ArticleDOI
Vanadium containing self-adaptive low-friction hard coatings for high-temperature applications: A review
Robert Franz,Christian Mitterer +1 more
TL;DR: In this article, the authors provide an overview on the research performed with vanadium containing nitride hard coatings, focusing on aspects regarding the synthesis, structure and properties of these coatings and also includes a discussion on possible future developments and further improvements of the coating design.
Journal ArticleDOI
Structural, mechanical and tribological properties of CrAlN coatings deposited by reactive unbalanced magnetron sputtering
Xing-zhao Ding,Xianting Zeng +1 more
TL;DR: In this article, a series of CrAlN coatings with Al/Cr atomic ratio between 0 and 0.6 were deposited on high speed steel substrates by reactive unbalanced magnetron sputtering.
References
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TL;DR: In this article, the experimental, theoretical, and empirical correlations between functional organic groups and the infrared spectrum were discussed and many examples of spectra of inorganic compounds in the solid phase were presented.
Journal ArticleDOI
Phase transition of pseudobinary Cr–Al–N films deposited by magnetron sputtering method
TL;DR: In this paper, the phase transition of pseudobinary Cr 1− x Al x N was investigated by synthesizing Cr-Al-N films using a reactive magnetron sputtering method.
Journal ArticleDOI
Synthesis of pseudobinary Cr-Al-N films with B1 structure by rf-assisted magnetron sputtering method
Yukio Makino,Kiyoshi Nogi +1 more
TL;DR: In this paper, pseudobinary Cr-Al-N films were synthesized by a new inductively combined rf-plasma assisted magnetron sputtering method, and phase transition from B1 (NaCl) structure to B4 (wurtzite) structure occurs at an AlN content between 70 mol% and 80mol%, and the critical composition for the phase transition showed excellent agreement with the composition predicted by two band parameters.
Journal ArticleDOI
(Cr:Al)N coatings deposited by the cathodic vacuum are evaporation
TL;DR: In this article, (Cr:Al)N coatings were deposited using two cathodic vacuum arc evaporators fitted with chromium and aluminium cathodes, and both monolayer and multilayer coatings with different aluminium content were investigated.
Journal ArticleDOI
Mechanical properties and tribological behavior of TiN–CrAlN and CrN–CrAlN multilayer coatings
TL;DR: In this paper, a multilayer coating that combines the properties of several coating materials was used for rolling wear tests on 100Cr6 and S6-5-2 (DIN) steel substrates.