离析空气等离子体中成分复杂的 AlB2-型二硼化物

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-10-02 DOI:10.1016/j.jeurceramsoc.2024.116963

F. Monteverde , C. Pellegrini , M. Balat-Pichelin , W. Fahrenholtz , G. Hilmas

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引用次数: 0

摘要

含有 IV-V-VI 族元素的多金属成分复杂 (CC) AlB2 型二硼化物固溶体（SS）正在引起越来越多的研究兴趣。本研究探讨了名义等原子（Hf,Me,Ta,Ti,Zr）B2 SS（Me = Nb 或 Cr）暴露于离析空气等离子体（总压力约为 1 kPa）中的抗氧化性成分依赖性：使用太阳炉在 1800 K 和 2500 K 之间的某些选定设定点对试样进行 5 分钟的暴露。与含铬的二硼化铬镍钴合金相比，含铌的二硼化铬镍钴合金具有更强的抗氧化性。实验结果与基于热力学评估的预测结果十分吻合。

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Compositionally complex AlB2-type diborides in dissociated air plasma

Multi-metal compositionally complex (CC) AlB₂-type diboride solid solutions (SS) containing IV-V-VI group elements are garnering a steadily growing research interest. The present work explores the composition dependence of oxidation resistance on nominally equiatomic (Hf,Me,Ta,Ti,Zr)B₂ SS, Me = Nb or Cr, exposed to a dissociated air plasma (total pressure of about 1 kPa): specimens were exposed for 5 min at some selected set points between 1800 K and 2500 K using a solar furnace. The CC diboride with Nb showed superior resistance to oxidation compared to that with Cr. The experimental results showed good agreement with predictions based on a thermodynamic assessment.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.