A novel NbC/CrMnFeCoNi0.8 high entropy alloy matrix composites with ultrastrength and ductility: Experiments and density function theory

Huang, Sirui; Wu, Hao; Chen, Yujie; Zhao, Zhenguo; Liu, Xiaoyan; Deng, Yuanbo; Zhu, Heguo

doi:10.1016/j.coco.2023.101510

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…34 To further understand the ORR activity and CH 3 OH antipoisoning properties of Pd 20 Sb 7 NPs, we also performed spinpolarized DFT computations. 35 According to experimental results, the {410} facet of Pd 20 Sb 7 NPs is the main exposed facet. Based on this, we chose the {410} facet of the model.…”

Section: Resultsmentioning

confidence: 99%

Anti-poisoned oxygen reduction reaction by rice-like Pd–Sb nanoparticles

Fu,

Chen,

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Anti-poisoned oxygen reduction reaction by rice-like Pd–Sb nanoparticles

Fu,

Chen,

et al. 2024

J. Mater. Chem. A

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“…[40] Recently, high-entropy materials have raised great interest in various application research fields due to their unique microstructure and unprecedented physical and chemical properties. [41] Among them, high-entropy alloys (HEAs) are an important kind of high-entropy materials that have been widely studied. HEAs typically refer to alloys containing five or more main components, which provide a stable and chemically complex crystalline solid solution phase, which is rare in traditional alloy electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

Huang,

Chen,

Chang

et al. 2024

Advanced Materials

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Crystal‐phase engineering that promoting the rearrangement of active atoms to form new structural frameworks has achieved excellent result in the field of electrocatalysis and optimized the performance of various electrochemical reactions. Herein, for the first time, we found that the different components in metallic aerogels will affect the crystal‐phase transformation, especially in high‐entropy alloy aerogels (HEAAs), whose crystal‐phase transformation during annealing is more difficult than medium‐entropy alloy aerogels (MEAAs), but they still show better electrochemical performance. Specifically, PdPtCuCoNi HEAAs with the parent phase of face‐centered cubic (FCC) PdCu possess excellent 89.24% of selectivity, 746.82 mmol h−1 g−1cat. of yield rate, and 90.75% of Faraday efficiency for ethylamine during acetonitrile reduction reaction (ARR), while maintaining stability under 50 h of long‐term testing and 10 consecutive electrolysis cycles. The structure‐activity relationship indicates that crystal‐phase regulation from amorphous state to FCC phase promotes the atomic rearrangement in HEAAs, thereby optimizing the electronic structure, and enhancing the adsorption strength of reaction intermediates, improving the catalytic performance. This study provides a new paradigm for developing novel ARR electrocatalysts, and also expands the potential of crystal‐phase engineering in other application areas.This article is protected by copyright. All rights reserved

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“…It abandons the traditional alloy design methods of taking one or two elements as the main phases but puts forward a new concept of multiple principal elements with equal atomic ratio or near equal atomic ratio [4]. Nowadays, HEAs have shown their unique characteristics and application potentials in the fields of lightweight materials, extreme temperature resistant materials, chemical corrosion materials, magnetic materials, superconducting materials and engineering mechanics materials [5][6][7][8][9][10]. Efforts in the field of HEAs have achieved some results in recent years.…”

Section: Introductionmentioning

confidence: 99%

Hot-extruded AlCoCrFeNi high-entropy alloy with ultra-high strength and large ductility

Dou

Yin

Niu

et al. 2023

Materials Science and Technology

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An equimolar AlCoCrFeNi high-entropy alloy (HEA) with trade-off properties between strength and ductility is prepared by hot extrusion for the first time. Compared with the HEAs prepared by casting and heat treatments, hot-extruded AlCoCrFeNi HEA not only contains uniform elements and phase distributions but also finer grains and microstructures. The average diameter of the homogeneous equal-axis fine grains is less than 5 µm. The compressive yield strength and ultimate compressive strength of the hot-extruded AlCoCrFeNi HEA reach 1450 and 3500 MPa respectively, while the compressive strain reach 42%. These excellent mechanical properties are attributed to the fine microstructure. In addition, the uniform dispersed network phase structures, ultrafine sub-grains, high density dislocations and blunted cracks in the deformed AlCoCrFeNi HEA are all the important factors affecting the strength and plasticity of the HEA. Hot-extruded AlCoCrFeNi HEA with excellent mechanical properties confirms a great prospect for the preparation of high-strength HEAs.

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A novel NbC/CrMnFeCoNi0.8 high entropy alloy matrix composites with ultrastrength and ductility: Experiments and density function theory

Cited by 9 publications

References 17 publications

Anti-poisoned oxygen reduction reaction by rice-like Pd–Sb nanoparticles

Anti-poisoned oxygen reduction reaction by rice-like Pd–Sb nanoparticles

Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

Hot-extruded AlCoCrFeNi high-entropy alloy with ultra-high strength and large ductility

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