Synthesis mechanism and characterization of tantalum boride powder prepared by boron/carbothermal reduction

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of the American Ceramic Society Pub Date : 2024-09-16 DOI:10.1111/jace.20116

Yu Tian, Wei-Ming Guo, Yi Liu, Si-Yuan Tong, Zi-Jian Huang, Hua-Tay Lin

引用次数: 0

Abstract

This study investigated the synthesis mechanism of tantalum boride (TaB₂) powder via the boron/carbothermal reduction method, based on thermodynamic calculations and experimental results. The insufficient presence of the intermediate product B₂O₃ leads to the emergence of TaC and Ta₃B₄, while in the presence of a sufficient boron source in the reaction system, the primary products formed include TaB₂, TaC, and B₂O₃, with TaC subsequently reacting with B₂O₃ and carbon to yield TaB₂. TaB₂ powder was successfully synthesized at 1500°C with the addition of an excess of 20 wt% B₄C. The particle size of the powder was approximately 298 nm, and the oxygen content and carbon content in the powder were 0.6 and 0.1 wt.%, respectively.

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硼/羰基热还原法制备的硼化钽粉末的合成机理与表征

本研究基于热力学计算和实验结果，研究了硼/羰基热还原法合成钽硼化物（TaB2）粉末的机理。中间产物 B2O3 的存在不足会导致 TaC 和 Ta3B4 的出现，而在反应体系中有足够硼源的情况下，形成的主要产物包括 TaB2、TaC 和 B2O3，TaC 随后与 B2O3 和碳反应生成 TaB2。在 1500°C 的温度下，加入过量的 20 wt% B4C，成功合成了 TaB2 粉末。粉末的粒度约为 298 nm，粉末中的氧含量和碳含量分别为 0.6 和 0.1 wt.%。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.

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