Electric arc vacuumless synthesis of IV–V group transition metal carbides

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2024-07-20 DOI:10.1007/s11243-024-00598-3

Yuliya Z. Vassilyeva, Alexander Ya. Pak, Alexandra I. Kokorina, Zhanar S. Bolatova, Dmitrii O. Glushkov

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Abstract

Refractory transition metal carbides are of interest due to their high melting point and hardness. This work demonstrates the synthesis of transition metal carbides, such as TiC, VC, ZrC, NbC, HfC, and TaC, by vacuumless electric arc method. Numerical simulation of heat transfer processes in the reaction zone was implemented to predict the parameters (temperature and reaction duration) ensuring synthesis and dominance of the corresponding metal carbide phases over by-products. The obtained parameters were used for a series of experiments conducted to confirm the production of transition metal carbides under specified conditions during arc discharge plasma synthesis. The fabricated materials were analyzed by X-Ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy techniques in order to assess the parameters of the structure, chemical composition, and particle morphology of the synthesized products. The oxidation properties of each monocarbide were studied by differential thermal analysis, thermal gravimetry and differential scanning calorimetry.

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电弧无真空合成 IV-V 族过渡金属碳化物

难熔过渡金属碳化物因其熔点高、硬度大而备受关注。这项工作展示了通过无真空电弧法合成 TiC、VC、ZrC、NbC、HfC 和 TaC 等过渡金属碳化物的过程。对反应区的传热过程进行了数值模拟，以预测确保合成的参数（温度和反应持续时间），以及相应金属碳化物相相对于副产品的优势。所获得的参数被用于一系列实验，以确认在电弧放电等离子体合成过程中的特定条件下过渡金属碳化物的生产。通过 X 射线衍射、扫描电子显微镜、透射电子显微镜和能量色散 X 射线光谱技术对制备的材料进行分析，以评估合成产品的结构、化学成分和颗粒形态参数。通过差热分析、热重计和差示扫描量热法研究了每种单碳化物的氧化特性。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.