Influence of Cr2AlC additive on the properties and corrosion resistance of Cr2O3-Al2O3 refractories

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2025-07-23 DOI:10.1111/ijac.70021

Mengjie Deng, Zheng Miao, Tao Zhang, Zihao Wu, Wen Yan, Nan Li, Junfeng Chen

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Abstract

Cr₂O₃-containing refractories are widely applied to the harsh service environments, such as coal water slurry gasifiers and various nonferrous metallurgical processes. The Cr₂O₃-Al₂O₃ solid solution in the high chrome brick, as the main bonding system, has an adverse effect on the high-temperature properties of the Cr₂O₃-containing refractories of the final production. In this work, the incorporation of Cr₂AlC into the conventional Cr₂O₃-Al₂O₃ as additive was carried out, and the effect of Cr₂AlC on the high-temperature properties and corrosion resistance was investigated. The results indicated that the residual strength ratio still maintained stability when the content of Cr₂AlC added was 5%. While the corrosion resistance index of the sample with 5wt% Cr₂AlC-adding increased approximately 50% compared with the regular Cr₂O₃-Al₂O₃ refractories. In addition, the degradation mechanism of the Cr₂O₃-Al₂O₃ refractories after the addition of Cr₂AlC in contact with slag was studied, and the role of Cr₂AlC was elucidated.

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Cr2AlC添加剂对Cr2O3-Al2O3耐火材料性能及耐蚀性的影响

含cr2o3耐火材料广泛应用于恶劣的使用环境，如水煤浆气化炉和各种有色冶金工艺。高铬砖中的Cr2O3-Al2O3固溶体作为主要结合体系，对最终生产的含cr2o3耐火材料的高温性能有不利影响。在常规的Cr2O3-Al2O3中加入Cr2AlC作为添加剂，研究了Cr2AlC对高温性能和耐腐蚀性的影响。结果表明，当Cr2AlC添加量为5%时，残余强度比仍保持稳定；与普通的Cr2O3-Al2O3耐火材料相比，添加5wt% cr2alc的耐火材料的耐蚀性能提高了约50%。此外，还研究了Cr2AlC与炉渣接触后对Cr2O3-Al2O3耐火材料的降解机理，阐明了Cr2AlC的作用。

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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;