Oxidation behavior of SiC‐AlN ceramics exposed to dry oxygen and water oxygen environments at 1100–1300°C

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

International Journal of Applied Ceramic Technology Pub Date : 2024-08-25 DOI:10.1111/ijac.14903

Xiaofan Sun, Xiaowu Chen, Min Tan, Yanmei Kan, Xihai Jin, Zhen Wang, Ning Liu, Jianbao Hu, Jinshan Yang, Shaoming Dong

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引用次数: 0

Abstract

The corrosion of SiCf/SiC composites in gas environment threatens their long‐term service in aeroengines as hot‐end structure components. Addition of corrosion‐resistant phases into SiC matrix is a potential strategy to improve the service performance of SiCf/SiC materials. Here, AlN added SiC ceramics were prepared by reactive melt infiltration, and the effect of AlN phase on the oxidation resistance of the ceramics was emphasized. The oxidation tests were performed in dry oxygen and water oxygen atmospheres at 1100°C–1300°C, respectively. The oxidation mechanism was discussed based on the microstructure evolution of the oxide layer. The results show that the oxide layer is composed of aluminum silicate glass and Al2O3 flakes dispersedly distributed in the glass phase. As the temperature rises, the oxide layer gradually grows and thickens. Finally, a smooth and dense protective layer could be formed on the surface of ceramics to resist oxidation. This study can provide a profound insight to construct SiCf/SiC composites with excellent oxidation resistance.

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暴露于 1100-1300°C 干氧和水氧环境中的 SiC-AlN 陶瓷的氧化行为

SiCf/SiC 复合材料在气体环境中的腐蚀威胁着其在航空发动机热端结构部件中的长期使用。在 SiC 基体中添加抗腐蚀相是改善 SiCf/SiC 材料服役性能的潜在策略。本文采用反应熔渗法制备了添加 AlN 的 SiC 陶瓷，并重点研究了 AlN 相对陶瓷抗氧化性的影响。氧化试验分别在 1100°C-1300°C 的干氧和水氧气氛中进行。根据氧化层的微观结构演变讨论了氧化机理。结果表明，氧化层由硅酸铝玻璃和分散分布在玻璃相中的 Al2O3 薄片组成。随着温度的升高，氧化层逐渐增大变厚。最后，陶瓷表面形成了光滑致密的保护层，从而起到抗氧化的作用。这项研究为构建具有优异抗氧化性的 SiCf/SiC 复合材料提供了深刻的启示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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;