机械磨YBaCo4O7+δ氧吸附剂：洞察氧污染和表面结构

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-05-23 DOI:10.1016/j.net.2025.103713

Byoungjin So, Seok-Min Hong, Chang Hwa Lee

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引用次数: 0

摘要

本文报道了YBaCo4O7+δ的球磨效应和表面结构，并通过掠射x射线衍射和x射线光电子能谱分析了YBaCo4O7+δ作为吸氧剂的应用前景。将未磨粉末的形貌与已磨2 h和20 h粉末的形貌进行了比较。磨粉降低了氧气吸入和释放的转变温度，并伴有残余应变诱导的转变。在加入过量氧气后，铣削和未铣削的样品在浅深度处都发现了较不有序的结构。研究结果有助于了解球磨YBaCo4O7+δ对其结构和储氧性能的影响。

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Mechanically-milled YBaCo4O7+δ for oxygen sorbents: insights into oxygen contamination and surface structure

We report on the ball-milling effect and surface structure of YBaCo₄O_7+δ, which is being considered for use as oxygen sorbents through grazing incidence x-ray diffraction and X-ray photoelectron spectroscopy. Morphologies from unmilled powders were compared to morphologies of powders that had been milled for 2 or 20 h. Milling decreased the transition temperature for oxygen intake and release and caused residual strain-induced transition were accompanied. After excess oxygen was incorporated, the less ordered structure at shallow depth was found in both milled and unmilled specimens. The results could help to understand how ball-milling of the YBaCo₄O_7+δ affects its structures and oxygen-storage properties.

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development