Effect of wavelength modulation of arc evaporated Ti–Al–N/Ti–Al–V–N multilayer coatings on microstructure and mechanical/tribological properties

Pfeiler-Deutschmann, Martin; Mayrhofer, P.H.; Chladil, Kerstin; Penoy, M.; Michotte, C.; Kathrein, M.; Mitterer, Christian

doi:10.1016/j.tsf.2014.10.051

Cited by 20 publications

(10 citation statements)

References 22 publications

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“…2b. The formation of (Cr,Al) x O y is in agreement with the literature data, where previous results stated reduced oxidation resistance of c-Cr(Al)N and w-Al(Cr)N phases after decomposition 9,10 .…”

Section: Resultssupporting

confidence: 92%

Stress-controlled decomposition routes in cubic AlCrN films assessed by in-situ high-temperature high-energy grazing incidence transmission X-ray diffraction

Meindlhumer

Klima

Jäger

et al. 2019

Sci Rep

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The dependence of decomposition routes on intrinsic microstructure and stress in nanocrystalline transition metal nitrides is not yet fully understood. In this contribution, three Al0.7Cr0.3N thin films with residual stress magnitudes of −3510, −4660 and −5930 MPa in the as-deposited state were in-situ characterized in the range of 25–1100 °C using in-situ synchrotron high-temperature high-energy grazing-incidence-transmission X-ray diffraction and temperature evolutions of phases, coefficients of thermal expansion, structural defects, texture as well as residual, thermal and intrinsic stresses were evaluated. The multi-parameter experimental data indicate a complex intrinsic stress and phase changes governed by a microstructure recovery and phase transformations taking place above the deposition temperature. Though the decomposition temperatures of metastable cubic Al0.7Cr0.3N phase in the range of 698–914 °C are inversely proportional to the magnitudes of deposition temperatures, the decomposition process itself starts at the same stress level of ~−4300 MPa in all three films. This phenomenon indicates that the particular compressive stress level functions as an energy threshold at which the diffusion driven formation of hexagonal Al(Cr)N phase is initiated, provided sufficient temperature is applied. In summary, the unique synchrotron experimental setup indicated that residual stresses play a decisive role in the decomposition routes of nanocrystalline transition metal nitrides.

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Section: Resultssupporting

confidence: 92%

Stress-controlled decomposition routes in cubic AlCrN films assessed by in-situ high-temperature high-energy grazing incidence transmission X-ray diffraction

Meindlhumer

Klima

Jäger

et al. 2019

Sci Rep

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“…As for the Ti33-xAl67VxN coatings, Pfeiler et al found that increasing V content reduced the fraction of hcp AlN phase in the dual-phase (fcc/hcp) structure, and the highest hardness of 27.5 GPa was obtained for the coating with 16.5 at.% V [18]. As for the Ti16.5Al67V16.5 targets, with increasing the bias voltage from -40 to -160 V, the coating hardness increased form 27.6 to 38 GPa, which mainly due to the vanishing of hcp AlN phase and high ion bombardment induced defect density [38,39]. Thus, the superhard AlTiVN-Cu(2.6 at.%) coating achieved in this study not only related to the V-alloying but also the addition of Cu.…”

Section: Mechanical Propertiesmentioning

confidence: 95%

Effect of Cu doping on the microstructure and mechanical properties of AlTiVN-Cu nanocomposite coatings

Mei

Geng

Wang

et al. 2020

Surface and Coatings Technology

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“…The optimum property of single-layer TiAlCxN1-x was obtained by using a suitable flow ratio of reaction gas (nitrogen: 35sccm, methane: 35sccm). Through the multiple nano-layer designs, multilayer coatings with an appropriate modulation period and modulation ratio can not only combine the advantages of the sub-layers, but also introduce the interfaces which prevent the slipping of dislocations and crack propagation, and reduce stress concentration 25 . The TiAlN and TiAlC0.37N0.63 sub-layers present the same texture (fcc, a=4.24Å, see Fig.8) and a similar elastic modulus (304.22GPa, 299.09GPa, respectively, see table 1).…”

Section: Discussionmentioning

confidence: 99%

Characterization and Tribological Behavior of TiAlN/TiAlCN Multilayer Coatings

Lei

Zhu

et al. 2018

Journal of Tribology

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Effects of partial pressure of methane on deposition rate, hardness, bonding strength and friction coefficient of TiAlN/TiAlC0.37N0.63 multilayer coating were investigated. The TiAlN coating was deposited at a N2 flow rate of 70 sccm, and TiAlC0.37N0.63 coating were deposited at a N2 flow rate of 35 sccm and a CH4 flow rate of 35 sccm. TiAlN/TiAlC0.37N0.63 multilayer coatings with different modulation periods but the same total thickness of 3.56 μm were deposited on high speed steel (HSS) substrates using multi-arc ion plating technology. Microhardness and tribological measurement show that the multilayer coating with a modulating ratio of 1:1 and a modulation period of 68 nm had a hardness of 2793.9 HV0.10, an excellent bonding strength of 52 N, and the minimum friction coefficient of 0.46 and a relatively low wear rate.

show abstract

Effect of wavelength modulation of arc evaporated Ti–Al–N/Ti–Al–V–N multilayer coatings on microstructure and mechanical/tribological properties

Cited by 20 publications

References 22 publications

Stress-controlled decomposition routes in cubic AlCrN films assessed by in-situ high-temperature high-energy grazing incidence transmission X-ray diffraction

Stress-controlled decomposition routes in cubic AlCrN films assessed by in-situ high-temperature high-energy grazing incidence transmission X-ray diffraction

Effect of Cu doping on the microstructure and mechanical properties of AlTiVN-Cu nanocomposite coatings

Characterization and Tribological Behavior of TiAlN/TiAlCN Multilayer Coatings

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