Nanostructured nitride films of multi-element high-entropy alloys by reactive DC sputtering

Chen, Ta-Kun; Wong, Ming‐Show; Shun, Tao-Tsung; Yeh, Jien‐Wei

doi:10.1016/j.surfcoat.2005.08.081

Cited by 186 publications

(80 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a number of potential applications have been highlighted in the literature. These include their use as protective coatings owing to their good corrosion and wear resistance 1,80,84,115,170,171,[219][220][221][222][223][224][225][226][227][228][229][230][231] (see review of laser-deposited HEA coatings by Zhang et al 232 ), as alloys for bulk metallic glasses, 11,[233][234][235][236] and even as materials for hydrogen storage 237 and diffusion barriers. 1,181,182 There has also been interest in their magnetic 1,10,97,[238][239][240][241][242][243] and thermoelectric properties.…”

Section: A Route For Alloy Developmentmentioning

confidence: 99%

High-entropy alloys: a critical assessment of their founding principles and future prospects

Pickering

Jones

2016

International Materials Reviews

736

299

View full text Add to dashboard Cite

High-entropy alloys (HEAs) are a relatively new class of materials that have gained considerable attention from the metallurgical research community over recent years. They are characterised by their unconventional compositions, in that they are not based around a single major component, but rather comprise multiple principal alloying elements. Four core effects have been proposed in HEAs: (1) the entropic stabilisation of solid solutions, (2) the severe distortion of their lattices, (3) sluggish diffusion kinetics and (4) that properties are derived from a cocktail effect. By assessing these claims on the basis of existing experimental evidence in the literature, as well as classical metallurgical understanding, it is concluded that the significance of these effects may not be as great as initially believed. The effect of entropic stabilisation does not appear to be overarching, insufficient evidence exists to establish the strain in the lattices of HEAs, and rapid precipitation observed in some HEAs suggests their diffusion kinetics are not necessarily anomalously slow in comparison to conventional alloys. The meaning and influence of the cocktail effect is also a matter for debate. Nevertheless, it is clear that HEAs represent a stimulating opportunity for the metallurgical research community. The complex nature of their compositions means that the discovery of alloys with unusual and attractive properties is inevitable. It is suggested that future activity regarding these alloys seeks to establish the nature of their physical metallurgy, and develop them for practical applications. Their use as structural materials is one of the most promising and exciting opportunities. To realise this ambition, methods to rapidly predict phase equilibria and select suitable HEA compositions are needed, and this constitutes a significant challenge. However, while this obstacle might be considerable, the rewards associated with its conquest are even more substantial. Similarly, the challenges associated with comprehending the behaviour of alloys with complex compositions are great, but the potential to enhance our fundamental metallurgical understanding is more remarkable. Consequently, HEAs represent one of the most stimulating and promising research fields in materials science at present.

show abstract

Section: A Route For Alloy Developmentmentioning

confidence: 99%

High-entropy alloys: a critical assessment of their founding principles and future prospects

Pickering

Jones

2016

International Materials Reviews

736

299

View full text Add to dashboard Cite

show abstract

“…Dolique et al [25] deposited crystalline films and determined that the microstructure of the film was dependent on the operating power of the sputtering target. The simple face-centered cubic (FCC) crystalline Al 0.5 CrCoCuFeNi film solid solution was first reported in 2004 by Chen et al [23] based on the lab X-ray diffraction (XRD) results. However, a recent paper reported Cr-phase separation in an HEA, whereas the XRD showed only a single FCC structure.…”

mentioning

confidence: 99%

“…[20][21][22] Due to the unique properties of HEAs, it would be very promising to employ HEAs as a thin-film material. Amongst the reported HEA thin-film work, [23][24][25][26][27] Huang et al [24] reported the sputter deposition of an amorphous phase of an AlCrCoCu 0.5 FeNi film. Dolique et al [25] deposited crystalline films and determined that the microstructure of the film was dependent on the operating power of the sputtering target.…”

mentioning

confidence: 99%

Solid-Solution CrCoCuFeNi High-Entropy Alloy Thin Films Synthesized by Sputter Deposition

Jia

et al. 2015

Materials Research Letters

142

View full text Add to dashboard Cite

“…Development of HEAs is one of the breakthroughs in the direction of development of new class of material, which opened new possibilities for development of a vast number of unique materials [4][5][6][7][8][9][10][11][12]. HEAs have been investigated recently to obtain the combination of good structural properties such as high hardness (100 to 1100 Hv) [12], work hardening capacity, wear resistance [9], high-temperature precipitation hardening (600 to 1000 • C), anti-oxidation and anti-corrosion resistance [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

An Insight into Evolution of Light Weight High Entropy Alloys: A Review

Kumar

Gupta

2016

Metals

144

View full text Add to dashboard Cite

High Entropy Alloys (HEAs) are the most recently developed new class of materials, which are known for their unique structural properties. Lightweight materials are currently in excessive demand for transportation and energy saving applications. In this review, efforts have been made to summarize the work done towards the development of HEAs targeting lightweight applications. Some new synthesis techniques are suggested for the fabrication of lightweight HEAs (LWHEAs). The concept of porous structure fabrication, microwave sintering of green compact, casting by disintegration melt deposition and advanced manufacturing using additive manufacturing are discussed as future directions of LWHEAs synthesis. LWHEAs for potential biomedical applications have also been addressed.

show abstract

Nanostructured nitride films of multi-element high-entropy alloys by reactive DC sputtering

Cited by 186 publications

References 13 publications

High-entropy alloys: a critical assessment of their founding principles and future prospects

High-entropy alloys: a critical assessment of their founding principles and future prospects

Solid-Solution CrCoCuFeNi High-Entropy Alloy Thin Films Synthesized by Sputter Deposition

An Insight into Evolution of Light Weight High Entropy Alloys: A Review

Contact Info

Product

Resources

About