Oxidation resistance and characterization of (AlCrMoTaTi)-Six-N coating deposited via magnetron sputtering

Tsai, Du‐Cheng; Deng, Min-Jen; Chang, Zue-Chin; Kuo, Bing-Hau; Chen, Erh-Chiang; Chang, Shou-Yi; Shieu, Fuh‐Sheng

doi:10.1016/j.jallcom.2015.06.025

Cited by 65 publications

(30 citation statements)

References 32 publications

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“…Another important technique for the HEA coatings is magnetron sputtering where the HEA is atomically sputtered layer-by-layer over a substrate. Most of the HEA coatings deposited by sputtering are HEA nitride, carbide, and boride coatings with excellent wear, oxidation, and irradiation resistance properties [81][82][83][84][85]. Most of these sputtered coatings have BCC or FCC solid solution phases with amorphous structures compared to other thermally sprayed coatings.…”

Section: Methods Of Fabrication Of Hea Coatingsmentioning

confidence: 99%

High Entropy Alloy Coatings and Technology

Sharma

2021

Coatings

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Recently, the materials research community has seen a great increase in the development of multicomponent alloys, known as high entropy alloys (HEAs) with extraordinary properties and applications. In surface protection and engineering, diverse applications of HEAs are also being counted to benefit from their attractive performances in various environments. Thermally sprayed HEA coatings have outperformed conventional coating materials and have accelerated further advancement in this field. Therefore, this review article overviews the initial developments and outcomes in the field of HEA coatings. The authors have also categorized these HEA coatings in metallic, ceramic, and composite HEA coatings and discussed various developments in each of the categories in detail. Various fabrication strategies, properties, and important applications of these HEAs are highlighted. Further, various issues and future possibilities in this area for coatings development are recommended.

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Section: Methods Of Fabrication Of Hea Coatingsmentioning

confidence: 99%

High Entropy Alloy Coatings and Technology

Sharma

2021

Coatings

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“…The superior oxidation resistance was owing to the protection of the dense Al 2 O 3 layer and inner Si-rich amorphous network. Tsai et al [135] prepared the (AlCrMoTaTi)-Si x -N coatings through a reactive magnetron sputtering system and found that the addition of Si into (AlCrMoTaTi)N coatings significantly improved the oxidation resistance. A Si content of 7.51 at.% could decrease the oxide layer thickness from 1590 nm to approximately 202 nm after oxidation at 900°C for 2 h. The good anti-oxidation performance could be attributed to the protective a-Al 2 O 3 surface layer and a-SiO 2 phase that existed in the inner oxide layer.…”

Section: Temperature and Oxidation Resistancementioning

confidence: 99%

Microstructures and properties of high-entropy alloy films and coatings: a review

Liu

Liaw

2018

Materials Research Letters

424

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In the past 14 years, as a branch of high-entropy alloy (HEA) materials, HEA films and coatings have exhibited the attractive and unique properties, relative to the conventional film and coating materials. The recent research and development of HEA films and coatings are reviewed in this paper. At first, the basic concept of HEAs films and coatings are introduced. Then, their preparation technologies, microstructures and appealing properties are summarized. Moreover, the possible reasons and design criteria for achieving the excellent properties are discussed. Finally, the suggested future research work for the HEA films and coatings are outlined. IMPACT STATEMENT Preparation technologies, microstructures, and properties of HEA films and coatings are reviewed in this paper. The design criteria and suggested research directions are further discussed and proposed.

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“…High‐entropy alloy nitrides (HEANs), a kind of high‐entropy ceramic material, have shown outstanding properties similar to HEAs, including high hardness, corrosion resistance, thermal stability, radiation resistance, and anti‐diffusion. [ 19–23 ] In principle, to design an HEAN coating, the selected elements should possess high affinity for nitrogen, such as V, Hf, Zr, Ti, and Nb. [ 24 ] In addition to the element composition, the deposition parameters of magnetron sputtering, such as the ratio of N 2 /Ar, the bias voltage, and the sputtering time, have a significant effect on the microstructure of HEANs, which endows the material with certain features, including mechanical and physical properties.…”

Section: Introductionmentioning

confidence: 99%

Scalable and Ultrathin High‐Temperature Solar Selective Absorbing Coatings Based on the High‐Entropy Nanoceramic AlCrWTaNbTiN with High Photothermal Conversion Efficiency

Gao

Qiu

et al. 2021

Solar RRL

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High‐entropy ceramics, especially high‐entropy alloy nitrides (HEANs), have attracted increasing attention in recent years due to their unique structural characteristics that result in their potential use in correlated high‐temperature structural materials. However, research on their optical properties, especially the spectral selectivity, is still in its infancy. According to Carnot efficiency, which demands an extremely high working temperature to elevate the performance of a concentrating solar power (CSP) system, excellent thermal stability is valuable to meet the requirements of solar selective absorbing coatings (SSACs). Herein, the high‐entropy ceramic AlCrWTaNbTiN is introduced as effective absorption layers by adjusting the nitrogen content to design and fabricate an ultrathin multilayer solar absorbing coating, which exhibits a high solar absorptance of 93% and a low emittance of 6.8% at 82 °C. Coating design (CODE) software is used to design and optimize the multilayer solar absorbing coating. Moreover, the optical properties, microstructure, thermal stability, and failure mechanism are investigated. Finite‐difference time‐domain (FDTD) calculations are used to understand the nature of the optical absorption consisting of intrinsic absorption and extinction absorption.

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Oxidation resistance and characterization of (AlCrMoTaTi)-Six-N coating deposited via magnetron sputtering

Cited by 65 publications

References 32 publications

High Entropy Alloy Coatings and Technology

High Entropy Alloy Coatings and Technology

Microstructures and properties of high-entropy alloy films and coatings: a review

Scalable and Ultrathin High‐Temperature Solar Selective Absorbing Coatings Based on the High‐Entropy Nanoceramic AlCrWTaNbTiN with High Photothermal Conversion Efficiency

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