热敏电阻用尖晶石型高熵氧化物（Co.2Cr.2Fe.2Mn.2Zn.2）3O4 的老化特性

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-07-18 DOI:10.1111/ijac.14866

Liangchen Fan, Jincheng Yao, Yuling Tuo, Aimin Chang, Zhaoyang Chen, Junhua Wang

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引用次数: 0

摘要

本文介绍了一种尖晶石型高熵陶瓷（Co.2Cr.2Fe.2Mn.2Zn.2）3O4。所获得的陶瓷在 125°C 下加速老化 500 小时的条件下表现出卓越的热稳定性，即所有在 1200 或 1275 或 1275 温度下烧结的样品的老化漂移均小于 0.35%。电阻的变化主要归因于晶界的氧化和氧空位的迁移。利用结构分析和 P-V-L 键合理论研究了晶体结构演变与老化特性之间的关系。从理论上讲，尖晶石结构中八面体位点上的 Co/Cr/Mn/Fe-O 键对控制结构稳定性更为重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Aging properties of spinel-type high-entropy oxides (Co.2Cr.2Fe.2Mn.2Zn.2)3O4 for thermistors

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Aging properties of spinel-type high-entropy oxides (Co.2Cr.2Fe.2Mn.2Zn.2)3O4 for thermistors

Herein, a spinel-type high-entropy ceramics (Co_.2Cr_.2Fe_.2Mn_.2Zn_.2)₃O₄ is introduced. The obtained ceramics exhibit superior thermal stability under accelerated aging conditions at 125°C for 500 h, that is, aging drift was less than .35% for all samples sintered at temperatures (1200or–1275or . The variation of resistance is mainly attributed to the oxidation of grain boundaries and the migration of oxygen vacancies. The relationship between crystal structure evolution and aging properties was investigated using structural analysis and P–V–L bonding theory. Theoretically, the Co/Cr/Mn/Fe–O bonds at the octahedral sites in the spinel structure are more important for controlling structural stability.

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;