可控氧分压下织构Ti2AlN的氧化

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-05-23 DOI:10.1016/j.jeurceramsoc.2025.117556

Ang Xu , Ruoqi Wang , Zhangcan Yang , Yifei Hu , Jilong Liu , Junjie Hu , Songyan Lu , Likun Miao , Heping Li , Jinping Suo

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引用次数: 0

摘要

含al MAX材料的性能受其氧化层中空洞形成的限制。在这项工作中，我们成功地在可控的氧分压下氧化织构Ti2AlN，在表面形成了高度保护的纳米晶α-Al2O3层。氧化层的质量取决于织构取向和氧压之间的协同作用。低氧压力导致Ti2AlN织构侧表面形成优越的α-Al2O3层。该过程有利于Al的扩散，在900℃时生成α-Al2O3。在实验观察和理论计算的基础上建立了氧化模型，提高了MAX材料在恶劣条件下的性能。

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Oxidation of textured Ti2AlN under controlled oxygen partial pressure

The performance of Al-containing MAX materials is limited by the formation of voids in their oxidation layer. In this work, we successfully formed a highly protective nanocrystalline α-Al₂O₃ layer on the surface by oxidizing textured Ti₂AlN under controlled oxygen partial pressure. The quality of the oxidation layer depends on the synergy between the textural orientation and oxygen pressure. Low oxygen pressure led to the formation of superior α-Al₂O₃ layers on the textured side surface of Ti₂AlN. This process facilitated Al diffusion and generated α-Al₂O₃ at 900 °C. An oxidation model was established based on experimental observations and theoretical calculations, enhancing the performance of MAX materials under harsh conditions.

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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.