电爆炸法制备高熵氧化物纳米颗粒

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-07-07 DOI:10.1016/j.powtec.2025.121370

Shuai Liu , Kangqi Liu , Liangwen Qi , Chenguang Wang , Guipeng Zhang , Dingbang Xiao

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引用次数: 0

摘要

高熵氧化物是一类由5种或5种以上主元素以等摩尔或近等摩尔比例组成的新型材料，具有许多优异的性能。本研究首次采用导线联合电爆法制备了不同结构的高熵氧化物纳米粉体，其中（FeCoNiCuZn）O为岩盐相，（feconicizn）O为尖晶石相。SEM和TEM结果表明，电爆炸产物中5种主要金属的分布较为均匀，产物的粒径大都在100 nm以下。XPS表明产物中金属阳离子的价态分布符合理想的高熵氧化物。研究结果表明，金属丝联合电爆炸是制备高熵氧化物纳米粉体的一种新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Preparation of high-entropy oxides nanoparticles by electrical explosion

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Preparation of high-entropy oxides nanoparticles by electrical explosion

High-entropy oxides are a new class of materials consisting of five or more main elements in equimolar or near equimolar ratio, which have many excellent properties. In this study, high entropy oxide nanopowders with different structures are prepared by joint electrical explosion of wires for the first time, in which (FeCoNiCuZn)O is the rock salt phase, and (FeCoNiTiZn)O is the spinel phase. According to the results of SEM and TEM, the distribution of the five principal metals in the products of electrical explosion is relatively homogeneous, and the particle sizes of the products are mostly below 100 nm. XPS shows that the valence distribution of metal cations in the products is consistent with the ideal high-entropy oxides. According to the research findings, joint electrical explosion of metal wires is a new method for the preparation of high-entropy oxide nanopowders.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.