Microstructural influence of the thermal behavior of arc deposited TiAlN coatings with high aluminum content

Chaar, Ana B. B.; Rogström, Lina; Johansson-Jöesaar, Mats P.; Barrirero, Jenifer; Aboulfadl, Hisham; Schell, Norbert; Ostach, Daniel; Mücklich, Frank; Odén, Magnus

doi:10.1016/j.jallcom.2020.157205

Cited by 20 publications

(8 citation statements)

References 54 publications

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“…Regarding recent improvements made on the properties and performance of TiAlNbased coatings, in the study carried out by Chaar et al [66] two TiAlN coatings with high aluminum content and differing structures were studied. One coating had a fine-grain structure, consisting of a mixture of cubic and hexagonal phases (dual-phase coating), the other coating had a coarse-grain structure of cubic phase.…”

Section: Monolayered Tialn-based Coatingsmentioning

confidence: 99%

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Sousa

Silva

Pinto

et al. 2021

Metals

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The machining process is still a very relevant process in today’s industry, being used to produce high quality parts for multiple industry sectors. The machining processes are heavily researched, with the focus on the improvement of these processes. One of these process improvements was the creation and implementation of tool coatings in various machining operations. These coatings improved overall process productivity and tool-life, with new coatings being developed for various machining applications. TiAlN coatings are still very present in today’s industry, being used due to its incredible wear behavior at high machining speeds, high mechanical properties, having a high-thermal stability and high corrosion resistance even at high machining temperatures. Novel TiAlN-based coatings doped with Ru, Mo and Ta are currently under investigation, as they show tremendous potential in terms of mechanical properties and wear behavior improvement. With the improvement of deposition technology, recent research seems to focus primarily on the study of nanolayered and nanocomposite TiAlN-based coatings, as the thinner layers improve drastically these coating’s beneficial properties for machining applications. In this review, the recent developments of TiAlN-based coatings are going to be presented, analyzed and their mechanical properties and cutting behavior for the turning and milling processes are compared.

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Section: Monolayered Tialn-based Coatingsmentioning

confidence: 99%

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Sousa

Silva

Pinto

et al. 2021

Metals

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“…All the TiAlNbN and TiAlNbN/AlCrN exhibited a typical fcc rock-salt-type B1 crystal structure. Hexagonal wurtzite-type AlN phases were not detected in the TiAlNbN/AlCrN although the coating possessed a high Al content [ 25 ]. Meanwhile, for the multilayer TiAlNbN/AlCrN, distinct TlAlNbN and AlCrN peaks were evident especially at (220) phase.…”

Section: Resultsmentioning

confidence: 99%

Improvement of Tribological Performance of TiAlNbN Hard Coatings by Adding AlCrN

Chang

Huang

2022

Materials

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In tribological applications, the degradation of alloy nitride coatings is an issue of increasing concern. The drawbacks of monolayer hard coatings can be overcome using a multilayer coating system. In this study, single-layer TiAlNbN and multilayer TiAlNbN/AlCrN coatings with AlCrN layer addition into TiAlNbN were prepared by cathodic arc evaporation (CAE). The multilayer TiAlNbN/AlCrN showed B1 NaCl structure, and the columnar structure continued from the bottom interlayer of CrN to the top multilayers without interruption. After AlCrN addition, the TiAlNbN/AlCrN coating consisted of TiAlNbN and AlCrN multilayers with a periodic thickness of 13.2 nm. The layer thicknesses of the TiAlNbN and AlCrN were 7 nm and 6.2 nm, respectively. The template growth of the TiAlNbN and AlCrN sublayers stabilized the cubic phases. The introduction of bottom CrN and the TiAlNbN/CrN transition layers possessed com-position-gradient that improved the adhesion strength of the coatings. The hardness of the deposited TiAlNbN was 30.2 ± 1.3 GPa. The TiAlNbN/AlCrN had higher hardness of 31.7 ± 3.5 GPa and improved tribological performance (wear rate = 8.2 ± 0.6 × 10−7 mm3/Nm) than those of TiAlNbN, which were because the multilayer architecture with AlCrN addition effectively resisted abrasion wear.

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“…1d), the macroscopic domain structures remained essentially unchanged while the contrasts of the HAADF images are turning inhomogeneous within each domain. The variation in HAADF contrasts is a result of the phase segregation where regions with distinct atomic masses scatter the electron beam differently, and the dislocation and micro-strain evolution accompanied with the atomic diffusion processes [45][46][47]. To get a better picture of the atomic distribution, energy dispersive spectroscopy (STEM-EDS) on the atomic ratio of titanium and aluminum was performed.…”

Section: Spinodal Decomposition and Structural Characterizationmentioning

confidence: 99%

Ultrahigh-inductance materials from spinodal decomposition

Gao,

Ku,

Deng

et al. 2021

Preprint

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Disordered superconducting nitrides with kinetic inductance have long been considered a leading material candidate for high-inductance quantum-circuit applications. Despite continuing efforts in reducing material dimensions to increase the kinetic inductance and the corresponding circuit impedance, it becomes a fundamental challenge to improve further without compromising material qualities. To this end, we propose a method to drastically increase the kinetic inductance of superconducting materials via spinodal decomposition while keeping a low microwave loss. We use epitaxial Ti0.48Al0.52N as a model system, and for the first time demonstrate the utilization of spinodal decomposition to trigger the insulator-to-superconductor transition with a drastically enhanced material disorder. The measured kinetic inductance has increased by 2-3 orders of magnitude compared with all the best reported disordered superconducting nitrides. Our work paves the way for substantially enhancing and deterministically controlling the inductance for advanced superconducting quantum circuits.

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Microstructural influence of the thermal behavior of arc deposited TiAlN coatings with high aluminum content

Cited by 20 publications

References 54 publications

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Improvement of Tribological Performance of TiAlNbN Hard Coatings by Adding AlCrN

Ultrahigh-inductance materials from spinodal decomposition

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