AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
View PDF
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article | Open Access | Just Accepted

The superior synergistic oxidation resistance of medium-entropy carbide ceramic powders rather than multi-phase carbide ceramic powders

Jiachen LiFanyu LuTao LiYanqin FuJunhao ZhaoJunshuai LvYulei Zhang( )

Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China

Show Author Information

Graphical Abstract

Abstract

Until now, some questions about medium-entropy carbide ceramic and the corresponding multi-phase carbide ceramic with the same cation and proportion remain unclear. Regarding oxidation behavior, do both have a synergistic oxidation ability and what role does entropy stabilization play in medium-entropy carbides? In this work, the oxidation behaviors of HfC-ZrC-TiC multi-phase carbide (HZT-MPC) and (Hf1/3Zr1/3Ti1/3)C medium-entropy carbide (HZT-MEC) powders were investigated. After thermogravimetry (TG) oxidation, the TG curve of HZT-MPC had a bimodal distribution. The “preferential oxidation” of HfC/ZrC occurred within HZT-MPC, followed by the formation of multi-phase oxides (HfO2, ZrO2 and TiO2). Uneven compositional distribution slowed down their solid solution reactions to form Ti-doped (Hf, Zr)O2 and (Hf, Zr)TiO4. While the TG curve of HZT-MEC had a single-peak characteristic. Uniform compositional distribution at the atomic scale promoted the rapid interdiffusion of oxides, forming Ti-doped (Hf, Zr)O2 and (Hf, Zr)TiO4 without ZrO2, HfO2 and TiO2 after TG oxidation. Additionally, HZT-MEC had a higher onset oxidation temperature (470 °C) compared to HZT-MPC (430 °C), and the TG single peak of HZT-MEC was between the TG bimodal peaks of HZT-MPC. Therefore, HZT-MEC showed superior oxidation resistance compared to HZT-MPC, which was attributed to the entropy stabilization effect of HZT-MEC suppressed the “preferential oxidation” of HfC/ZrC and the “delayed oxidation” of TiC, promoting the synergistic oxidation ability of multi-principal elements.

Journal of Advanced Ceramics
Cite this article:
Li J, Lu F, Li T, et al. The superior synergistic oxidation resistance of medium-entropy carbide ceramic powders rather than multi-phase carbide ceramic powders. Journal of Advanced Ceramics, 2024, https://doi.org/10.26599/JAC.2024.9220931

200

Views

59

Downloads

0

Crossref

0

Web of Science

0

Scopus

0

CSCD

Altmetrics

Received: 04 April 2024
Revised: 13 June 2024
Accepted: 15 June 2024
Available online: 16 June 2024

© The author(s) 2024

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

Return