Nano dual-phase CuNiTiNbCr high entropy alloy films produced by high-power pulsed magnetron sputtering

Li, Yantao; Wang, Chunting; Ma, D.L.; Zeng, Xiaokang; Liu, Mao; Jiang, Xiaosong; Leng, Y.X.

doi:10.1016/j.surfcoat.2021.127325

Cited by 30 publications

(7 citation statements)

References 37 publications

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“…Similar phenomena should definitely be present also in HEAs. Especially promising from this point of view are HEA thin films [72][73][74][75]. The HEA thin films are usually nanogranied and have, therefore, a high specific density of GBs.…”

Section: Gb Wetting By Second Solid Phase In Primarily Homogeneous He...mentioning

confidence: 99%

Grain Boundary Wetting by a Second Solid Phase in the High Entropy Alloys: A Review

et al. 2021

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In this review, the phenomenon of grain boundary (GB) wetting by the second solid phase is analyzed for the high entropy alloys (HEAs). Similar to the GB wetting by the liquid phase, the GB wetting by the second solid phase can be incomplete (partial) or complete. In the former case, the second solid phase forms in the GB of a matrix, the chain of (usually lenticular) precipitates with a certain non-zero contact angle. In the latter case, it forms in the GB continuous layers between matrix grains which completely separate the matrix crystallites. The GB wetting by the second solid phase can be observed in HEAs produced by all solidification-based technologies. The particle chains or continuous layers of a second solid phase form in GBs also without the mediation of a liquid phase, for example by solid-phase sintering or coatings deposition. To describe the GB wetting by the second solid phase, the new GB tie-lines should be considered in the two- or multiphase areas in the multicomponent phase diagrams for HEAs. The GB wetting by the second solid phase can be used to improve the properties of HEAs by applying the so-called grain boundary engineering methods.

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Section: Gb Wetting By Second Solid Phase In Primarily Homogeneous He...mentioning

confidence: 99%

Grain Boundary Wetting by a Second Solid Phase in the High Entropy Alloys: A Review

et al. 2021

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“…The incompatibility between amorphous SiN and the FCC (AlCrTiZrMo)N phase caused SiN to precipitate at the interface, resulting in a composite structure of amorphous SiN and nanocrystalline (AlCrTiZrMo)N [15]. Similar to the above, the precipitation of copper-rich phases can also form nanocomposite structures [16]. The above reports show that the formation of nanocomposite structures can be achieved by controlling the crystallization performance through energy, atomic size differences, or the chemical repulsion of atoms.…”

Section: Introductionmentioning

confidence: 72%

Plasma Bombardment-Induced Amorphization of (TiNbZrCr)Nx High-Entropy Alloy Nitride Films

Li,

Ma,

Liang

et al. 2024

Coatings

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The (TiNbZrCr)Nx high-entropy nitride films (HENFs) were prepared by high-power pulsed magnetron sputtering (HPPMS). The effect of the N2 flow rate (FN) on the HPPMS plasma discharge, film composition, microstructure, residual stress, tribological properties, and corrosion resistance was investigated. Results show that, with the increase in FN, plasma discharge is enhanced. Firstly, the introduced N atoms react with Ti, Nb, Cr, and Zr to form an FCC nitride phase structure. Then, with the increase in plasma bombardment on the deposited film, the HENFs undergo amorphization to form an FCC+ amorphous structure, accompanied by a decrease in grain size and a change in the preferred orientation from (1 1 1) to (2 0 0). The HENFs deposited at FN = 8 sccm show the highest hardness of 27.8 GPa. The HENFs deposited at FN = 12 sccm present the best tribological properties, with a low wear rate of 4.0 × 10−6 mm3N−1m−1. The corrosion resistance of the (TiNbZrCr)Nx HENFs shows a strong correlation with the amorphous phase. The corrosion resistance of the FCC nitride film is the worst, and the corrosion resistance gradually increases with the amorphous transformation of the film. Based on the above results, nanocomposite high-entropy films can be prepared using HPPMS technology and exhibit excellent, comprehensive performance.

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“…The corrosion resistance is increased, according to the variation of the nitrogen content, due to the densification of the films. CuNiTiNbCr dual-phases were formed at different working pressures as reported by Li and co-workers [25]. AlCrTiVZr HEFs have been studied under the effect of nitrogen.…”

Section: High Power Impulse Magnetron Sputtering (Hipims) Depositionmentioning

confidence: 92%

High Entropy Thin Films by Magnetron Sputtering: Deposition, Properties and Applications

Garah¹,

Schuster²,

Sanchette³

2023

High Entropy Materials - Microstructures and Properties

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Surface coating is of a great interest to increase the performances of the materials and extend its lifetime. High entropy films (HEFs) become the hot spot for developing surface engineering applications due to their good performances. They are reported to have superior properties such as good corrosion, wear resistance and excellent high temperature oxidation. Various deposition techniques have been exploited to fabricate HEFs such as laser cladding, spraying, sputter deposition and electrochemical deposition. These techniques are known to be an easy process to achieve a rapid quenching. Magnetron sputtering is seen as the most efficient methods to deposit the HEFs. Different gas can be used to prepare the ceramic materials. Besides, the deposition parameters reveal a strong influence on the physicochemical properties of HEFs. Working pressure, substrate temperature, bias voltage and gas mixture flow ratios have been reported to influence the morphology, microstructure, and functional properties of HEFs. The chapter overviews the development of the recent HEFs prepared by magnetron sputtering technique. First, it describes the principal of the technique. Then, it reports the classes of HEFs followed by the effect of the deposition parameters on their different properties. Applications have been developed using some HEFs for biomaterials and machining process.

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Nano dual-phase CuNiTiNbCr high entropy alloy films produced by high-power pulsed magnetron sputtering

Cited by 30 publications

References 37 publications

Grain Boundary Wetting by a Second Solid Phase in the High Entropy Alloys: A Review

Grain Boundary Wetting by a Second Solid Phase in the High Entropy Alloys: A Review

Plasma Bombardment-Induced Amorphization of (TiNbZrCr)Nx High-Entropy Alloy Nitride Films

High Entropy Thin Films by Magnetron Sputtering: Deposition, Properties and Applications

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