Microstructure and thermal stability of corundum-type (Al0.5Cr0.5)2O3 solid solution coatings grown by cathodic arc evaporation

Edlmayr, V.; Pohler, Markus; Letofsky-Papst, Ilse; Mitterer, Christian

doi:10.1016/j.tsf.2013.02.046

Cited by 33 publications

(10 citation statements)

References 25 publications

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“…In the case of films with an original corundum structure in the as deposited state, the thermal annealing did not lead to any structural modifications up to 1100 ºC. Similar results were found by Edlmayr et al [26] on vacuum annealed arc deposited coatings.…”

Section: Introductionsupporting

confidence: 86%

CrAlON CAE-PVD coatings for oxidation and wear protection of TZM alloys in FAST sintering applications

Almandoz

Ara

Bujanda

et al. 2018

Materials Chemistry and Physics

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In this work CrAlO and CrAlO/CrAlN multilayers deposited by cathodic arc evaporation are evaluated as protective films in metal and ceramic powder FAST sintering tool dies fabricated in titanium-zirconium-molybdenum allows (TZM). The films have been characterised in terms of their composition, microstructure, mechanical properties and thermal stability in air at high temperatures between 800 ºC and 1100 ºC; in addition the tribological performance has been analysed at room temperature and at 400 ºC. The crystalline structure and composition of the CrAlO based coatings are compatible with the formation of a mixture of α-corundum and a cubic fcc (Cr,Al)2O3. The crystalline structure of the multilayer is, on the other hand, dominated by the cubic fcc lattice plane reflections of the CrAlN.

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Section: Introductionsupporting

confidence: 86%

CrAlON CAE-PVD coatings for oxidation and wear protection of TZM alloys in FAST sintering applications

Almandoz

Ara

Bujanda

et al. 2018

Materials Chemistry and Physics

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“…In the case of films with an original corundum structure in the as-deposited state, thermal annealing did not lead to any structural modifications up to 1100 ºC. Similar results were found by Edlmayr et al [19] on vacuum, and by Najafi et al [14] on argon annealed arc deposited coatings. Hirai et al [1] reported that the fcc cubic structure of laser deposited Cr-Al-O-N remains after oxidation in air up to 1100 ºC.…”

Section: Introductionsupporting

confidence: 84%

“…This could be due to the fact that the diffusion kinetics of the atomic species within the oxide coatings (C-D) during annealing is slower than those in the nitride and oxynitrides films. reported by other authors [14,15,19]. Although it should be pointed out that those test in the literature were done under inert atmospheres, either Ar or vacuum.…”

Section: Discussionmentioning

confidence: 96%

Chemical and mechanical stability of air annealed cathodic arc evaporated CrAlON coatings

Almandoz

Fuentes

Fernández

et al. 2018

Surface and Coatings Technology

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This study reports the synthesis and characterization of ternary Cr-Al-O and quaternary Cr-Al-ON coatings deposited by cathodic arc physical vapour deposition, for various nitrogen and oxygen mass flow ratios during the growth process. The composition, microstructure, indentation hardness and modulus of the films have been characterized by scanning electron microscopy, electron probe micro-analysis, X-ray diffraction, and nanoindentation techniques. The evolution of the microstructure and mechanical properties of the coatings after ambient air annealing from 800ºC up to 1100 ºC have been investigated. As the oxygen to nitrogen mass flow increases, the as-deposited coatings exhibit lower hardness, higher roughness, lower crystallinity and a more marked columnar structure. At oxygen to nitrogen mass flow ratios bigger than 10/90, the coatings exhibit a stoichiometry of the type (CrAl)2+O3-. Only the coatings with an oxygen to nitrogen mass flow ratio smaller than 10/90 retained nitrogen in their compositions. In all cases, the coatings developed a cubic fcc lattice structure. After annealing at 1100 ºC the resulting microstructure showed a clear dependency upon the initial composition of the films. The evolution of the microstructure during the high temperature tests, as well as the analysis of the nanoindentation hardness, composition and thickness also provided valuable information about the combined effects of the thermal stability and the oxidation of the deposited coatings.

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“…These coatings use the addition of oxygen to form oxynitride coatings, that provide even better oxidation resistance than nitride coatings [21]. However, substantial improvement of cutting and wear performance could be achieved only by developing an alpha-phase aluminum-chromium oxide structure in the coating in order to prevent efficiently the oxidation at high temperature [4,[21][22][23]. These new α-(Al,Cr) 2 O 3 (α-oxide) based coatings are known to withstand extremely high temperatures in dry milling and turning of steels and other high-strength materials while exhibiting high wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Characterization of tribological behavior and wear mechanisms of novel oxynitride PVD coatings designed for applications at high temperatures

Nohava

Dessarzin

Karvánková

et al. 2015

Tribology International

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Microstructure and thermal stability of corundum-type (Al0.5Cr0.5)2O3 solid solution coatings grown by cathodic arc evaporation

Cited by 33 publications

References 25 publications

CrAlON CAE-PVD coatings for oxidation and wear protection of TZM alloys in FAST sintering applications

CrAlON CAE-PVD coatings for oxidation and wear protection of TZM alloys in FAST sintering applications

Chemical and mechanical stability of air annealed cathodic arc evaporated CrAlON coatings

Characterization of tribological behavior and wear mechanisms of novel oxynitride PVD coatings designed for applications at high temperatures

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