金属元素类型对高熵陶瓷粉末和涂层的形成机理和性能的影响

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-11-20 DOI:10.1016/j.jallcom.2024.177680

Wen-wei Sun, Yi Hu, Yong Yang, Hong-jian Zhao, Yan-wei Wang, Wei Li, Yu-xuan Shao, Pei-wen Ru, Yu-duo Ma, Sheng-yong Gao, Ai-min Li, Huan-huan Zhang

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引用次数: 0

摘要

高熵碳化物陶瓷以其单相形成和可调特性而著称，但通过元素变化调节粉末和涂层性能的研究却十分有限。本研究的重点是不同元素如何影响高熵相。利用前驱体 Ta2O5、ZrO2、Nb2O5、TiO2、V2O5、MoO3 和炭黑建立了两个反应体系，以探索两种元素对高熵碳化物形成的影响。等离子喷涂法制备了 (TaZrTiNbV)C 和 (TaMoTiNbV)C 致密涂层。分析了两种元素（Zr 和 Mo）对涂层相、微观结构、性能和形成机理的影响。(TaZrTiNbV)C涂层的硬度为1762 HV0.1，韧性为3.1 MPa-m1/2，这归因于细粒(TaZrTiNbV)C颗粒的存在。

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The influence of metal element types on the formation mechanism and properties of high-entropy ceramic powders and coatings

High entropy carbide ceramics, known for their single-phase formation and tunable properties, have seen limited research on regulating the performance of powders and coatings through elemental changes. This study focused on how different elements affect high entropy phase. Two reaction systems were established using precursors Ta₂O₅, ZrO₂, Nb₂O₅, TiO₂, V₂O₅, MoO₃, and carbon black to explore the impact of two elements on the formation of high-entropy carbide. The (TaZrTiNbV)C and (TaMoTiNbV)C dense coatings were prepared by plasma spraying. The influences of two elements (Zr and Mo) on the phase, microstructure, property, and formation mechanism of the coating were analyzed. The (TaZrTiNbV)C coating showing a hardness of 1762 HV_0.1 and a toughness of 3.1 MPa·m^1/2, which were attributed to the presence of finely-grained (TaZrTiNbV)C particles.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.