Effect of Cu content on electrical resistivity, mechanical properties and corrosion resistance of AlCu NiTiZr0.75 high entropy alloy films

Huang, Kai; Wang, Guanming; Qing, Huawen; Chen, Yigang; Guo, Haibo

doi:10.1016/j.vacuum.2021.110695

Cited by 20 publications

(8 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…14 to 16, respectively. Figure 3c demonstrates that compared to the HEA films reported in the literature 1,6,8,11,12,[26][27][28][29][30][31][35][36][37][44][45][46][47][48][49][50][51] , the NbMoTaW films prepared in this study exhibit the highest level of hardness.…”

Section: Mechanical Propertiesmentioning

confidence: 68%

“…The error bars represent the standard deviation. c Comparison of the hardness of Nb 25 Mo 25 Ta 25 W 25 , Nb 15 Mo 15 Ta 35 W 35 , and Nb 15 Mo 35 Ta 15 W 35 films with those of other high entropy alloy films in the literature 1 , 6 , 8 , 11 , 12 , 26 – 31 , 35 – 37 , 44 – 51 . …”

Section: Resultsmentioning

confidence: 99%

“…Huang et al reported that the addition of copper in the AlCu x NiTiZr 0.75 alloy resulted in a significant reduction in electrical resistivity, with the lowest recorded at approximately 66 μΩ-cm when x is 1.4, compared to 363 μΩ-cm at x = 1 8 . The authors qualitatively attributed this phenomenon to the presence of copper, which altered the binding energy and increased the electron-relaxation time, subsequently augmenting the density of states near the Fermi level.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-frequency conductivity of low wear high-entropy alloys

Yeh,

Hsu,

Liu

et al. 2024

Nat Commun

View full text Add to dashboard Cite

High-entropy alloys (HEAs) provide new research avenues for alloy combinations in the periodic table, opening numerous possibilities in novel-alloy applications. However, their electrical characteristics have been relatively underexplored. The challenge in establishing an HEA electrical conductivity model lies in the changes in electronic characteristics caused by lattice distortion and complexity of nanostructures. Here we show a low-frequency electrical conductivity model for the Nb-Mo-Ta-W HEA system. The cocktail effect is found to explain trends in electrical-conductivity changes in HEAs, while the magnitude of the reduction is understood by the calculated plasma frequency, free electron density, and measured relaxation time by terahertz spectroscopy. As a result, the refractory HEA Nb15Mo35Ta15W35 thin film exhibits both high hardness and excellent conductivity. This combination of Nb15Mo35Ta15W35 makes it suitable for applications in atomic force microscopy probe coating, significantly improving their wear resistance and atomic-scale image resolution.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low-frequency conductivity of low wear high-entropy alloys

Yeh,

Hsu,

Liu

et al. 2024

Nat Commun

View full text Add to dashboard Cite

show abstract

“…CuO being the predominant oxide in HEA and due to its detrimental nature in corrosion properties the compactness of the coating degrades with its presence [32]. It enhances the charge transfer, reducing the passivation when subjected to chloride environment hence resulting in increased rate of corrosion.…”

Section: Quantitative Analysis-cationic Fractionmentioning

confidence: 99%

Phase composition, surface chemistry and electrochemical studies of electrodeposited AlMnFeCuNi high entropy alloy composite coatings incorporated with carbon nanotubes

Mohan,

Pandel,

Kumar

2024

Mater. Res. Express

View full text Add to dashboard Cite

AlMnFeCuNi high entropy alloy (HEA) coatings were electrodeposited onto mild steel substrate with and without incorporation of carbon nano tubes (CNT). This paper focused on the morphology, hardness, wear and corrosion behaviour for as deposited HEA and HEA-CNT coatings. Both the coatings constituted simple solid solution with face-centered cubic (FCC) structure. The addition of carbon nano tubes in the HEA coatings as revealed by scanning electron microscopy showed more smaller granules and compact morphology with least coating thickness value (5 ± 0.35 μm). Enhanced Anti-wear performance results in higher hardness and lower coefficient of friction. The presence of CNTs resulted improvised corrosion resistant properties in 3.5% NaCl corrosive media. The formation of more protective oxides such as Alox+3, Mnox+2 and Feox+3 on passive oxide layer in HEA-CNT coatings acted as a barrier, protected it from corrosion.

show abstract

“…The result obtained reveals that the film's adhesion strength is good, and the hardness of the films reached a 2493HV value, 6.96 mN nanoindentation peak force loading, and 47.92% elastic recovery. Figures 3 show the summary of the comparison of hardness properties results of various sputtered HEAs thin films coatings from the literature (Garah et al, 2022;Liang et al, 2020;Yang et al, 2021;Huang et al, 2022;Khan et al, 2021;Kretschmer et al, 2021;Muftah et al, 2021a;Sha et al, 2020a;Xing et al, 2019;Xu et al, 2021;Medina et al, 2021), and Figure 4 shows the summary of the comparison of different elastic modulus of sputtered HEAs thin films coatings from the literature (Alvi et al, 2020b;Cai et al, 2021;Feng et al, 2013;Zhao et al, 2013;Kim, Park, Lim, et al, 2019;Lv et al, 2016;Ren et al, 2011;Tan et al, 2021;W. Liao et al, 2017b).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Sputtering of high entropy alloys thin films: An overview

Oladijo,

Akinlabi,

Mwema

et al. 2024

10.5267/j.esm

View full text Add to dashboard Cite

For the past 19 years, high entropy alloys (denoted as HEAs) have piqued the interest of many researchers due to their unique properties. Sputtering High Entropy Alloys on bulk materials, on the other hand, have been widely utilized due to their low cost of manufacture. This paper reviews the most recent trends and advancements in sputtered HEA coatings, thin film research, and development. Firstly, HEA coating and thin films were introduced. Then, a look at sputtering technologies and procedures is presented, followed by a summary of recent research on sputtered HEA thin films, properties, and applications. From reviewed literature, it can be deduced that HEAs that include the full nitride element have greater mechanical and elastic properties, and HEAs generally have the potential for structural, industrial, biomedical, and energy applications. Finally, it is suggested that new stable HEA films and coating research initiatives with various materials be undertaken to widen its applications.

show abstract

Effect of Cu content on electrical resistivity, mechanical properties and corrosion resistance of AlCu NiTiZr0.75 high entropy alloy films

Cited by 20 publications

References 31 publications

Low-frequency conductivity of low wear high-entropy alloys

Low-frequency conductivity of low wear high-entropy alloys

Phase composition, surface chemistry and electrochemical studies of electrodeposited AlMnFeCuNi high entropy alloy composite coatings incorporated with carbon nanotubes

Sputtering of high entropy alloys thin films: An overview

Contact Info

Product

Resources

About