中温固体氧化物燃料电池用 Al-Al2O3 复合密封件的膨胀特性研究

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Ceramic Technology Pub Date : 2024-06-14 DOI:10.1111/ijac.14821

Shanping Xu, Xiaochun Wang, Jie Kang, Wei Wang, Yun Ding, Xuepeng Zhao, Yaocheng Wang, Li Li

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摘要

添加了 10 wt% Al 粉末的 Al2O3 基复合密封件（A10）在固体氧化物燃料电池的宽温度范围内具有优异的塑性和机械性能。A10 密封件在 250°C-400°C 和 600°C-750°C 之间的增厚现象是由有机添加剂的热膨胀和固液铝与氧气反应生成 Al2O3 时的体积膨胀引起的。厚度变化率在 300°C 时达到最大值，约为 5%，在 650°C 时约为 4.46%。在 523-1 023 K 的温度范围内，Al 与 Al2O3 反应的吉布斯自由能均小于 0，这证明了 A10 在固体氧化物燃料电池工作温度下具有优异的自膨胀性和热力学特性。

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Study on expansion characteristics of Al–Al2O3 composite seals for intermediate-temperature solid oxide fuel cell

Al₂O₃-based composite seal with 10 wt% Al powder addition (A10) possesses excellent plastic and mechanical performance under wide temperature range of solid oxide fuel cell. The thickening phenomenon of A10 seal between 250°C–400°C and 600°C–750°C is caused by the thermal expansion of organic additives and the volume expansion when solid–liquid Al react with oxygen to form Al₂O₃. The thickness change rate reaches the maximum which is about 5% at 300°C and is about 4.46% at 650°C. The Gibbs free energy for reaction between Al and Al₂O₃ in the temperature range of 523–1 023 K is all less than 0, which is proved by the fact that A10 exhibits excellent self-expansion and thermodynamic properties in the solid oxide fuel cell operating temperature.

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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;