TiAlN film preparation by Y-shape filtered-arc-deposition system

“…Single phase ion plasma vacuum arc TiN coatings are characterized by hard ness H ~ 22-24 GPa, a columnar microstructure, and an operational temperature reaching 550°C. The main ways to improve them associated both with the mod ernization of their formation method itself [1] and with the fabrication of multicomponent titanium nitride based coatings [2][3][4], including the introduc tion of elements not interacting with TiN into their composition [5], are outlined today. Being arranged along the boundaries of nuclei of the forming nitride phase, they restrict the possibility of their growth and made the crystalline structure of the ceramic compo nent finer.…”

Section: Introductionmentioning

confidence: 99%

Properties of nanostructured TiN-Ni ceramic-metal coatings obtained by ion-plasma vacuum-arc method

Блинков

Volkhonskii

Белов

et al. 2014

Russ. J. Non-ferrous Metals

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Physicomechanical and tribological properties of TiN-Ni ceramic-metal coatings prepared by ion plasma vacuum arc deposition are investigated. It is established that the hardness (H) increases from 23 to 54 GPa with the Ni content from 0 to 12 at %, which is determined by the influence of the nanostruc tured nitride component of coatings. Coefficients HE -1 and H 3 E -2 , which characterize the material resis tance against the elastic and plastic failure deformation, reach 0.104 and 0.567 GPa, respectively. The further increase in the nickel concentration in coatings to 26 at % leads to a decrease in H to 23-25 GPa, which is associated with the influence of the increasing amount of soft plastic metal and the formation of noticeable porosity in the bulk of coatings. The friction coefficient of studied coatings is 0.45, against 0.58 (for the TiN coating) and 0.72 (for the hard alloy base). The cohesion failure mechanism of TiN-Ni nanostructured coat ings (C Ni = 2.8-12 at %) is established, and critical loads which characterize the appearance of the first crack (13.5-14.2 N) and the local coating attrition up to the substrate (61.9-64.4 N) are determined. The complete attrition of coatings does not occur up to a load of 90 N, which points to their high adhesion strength. The developed nanostructured ceramic-metal coatings are characterized by high heat resistance up to 800°C.

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“…In addition, VAD is the main method for deposition of transition metal nitrides due to its high degree of ionization, high-energy particles (50-100 eV) and deposition rate as well as the wide range of cathode materials. Furthermore, evaporated coatings exhibit higher density and adhesion than sputtered coatings [11].…”

Section: Introductionmentioning

confidence: 99%

The Formation of Composite Ti-Al-N Coatings Using Filtered Vacuum Arc Deposition with Separate Cathodes

Шулепов

Kashkarov

Stepanov

et al. 2017

Metals

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Ti-Al-N coatings were deposited on high-speed steel substrates by filtered vacuum arc deposition (FVAD) during evaporation of aluminum and titanium cathodes. Distribution of elements, phase composition, and mechanical properties of Ti-Al-N coatings were investigated using Auger electron spectroscopy (AES), X-ray diffraction (XRD), transmission electron microscopy (TEM) and nanoindentation, respectively. Additionally, tribological tests and scratch tests of the coatings were performed. The stoichiometry of the coating changes from Ti 0.6 Al 0.4 N to Ti 0.48 Al 0.52 N with increasing aluminum arc current from 70 A to 90 A, respectively. XRD and TEM showed only face-centered cubic Ti-Al-N phase with preferred orientation of the crystallites in (220) direction with respect to the sample normal and without precipitates of AlN or intermetallics inside the coatings. Incorporation of Al into the TiN lattice caused shifting of the (220) reflex to a higher 2θ angle with increasing Al content. Low content and size of microdroplets were obtained using coaxial plasma filters, which provides good mechanical and tribological properties of the coatings. The highest value of microhardness (36 GPa) and the best wear-resistance were achieved for the coating with higher Al content, thus for Ti 0.48 Al 0.52 N. These coatings exhibit good adhesive properties up to 30 N load in the scratch tests.

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TiAlN film preparation by Y-shape filtered-arc-deposition system

Cited by 14 publications

References 15 publications

60 years of DLC coatings: Historical highlights and technical review of cathodic arc processes to synthesize various DLC types, and their evolution for industrial applications

60 years of DLC coatings: Historical highlights and technical review of cathodic arc processes to synthesize various DLC types, and their evolution for industrial applications

Properties of nanostructured TiN-Ni ceramic-metal coatings obtained by ion-plasma vacuum-arc method

The Formation of Composite Ti-Al-N Coatings Using Filtered Vacuum Arc Deposition with Separate Cathodes

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