Preparation of V-element-containing Co-based composite powders by spray conversion and its effect on the microstructure properties of cemented carbides

IF 5.8 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Neng Huang, Shengda Guo, Hongyu Ren, Jianfeng Guo, Bin Li, Jianbo Zhang, Ying Ye, Bangqiang Wang, Minjie Hu
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Abstract

This study synthesized cobalt powder containing vanadium (V) through a spray transformation process combined with calcination and reduction. WC-6Co cemented carbide was subsequently produced using spark plasma sintering (SPS). This research examined the distribution of vanadium within the cobalt-based composite powder, and WC-Co cemented carbide and its effects on the materials' microstructure and properties. It was found that pre-introducing vanadium suppressed the Co phase transition from fcc to hcp during reduction, resulting in an expanded Co lattice constant. Additionally, the formation of (W, V)CX carbides during sintering refined the WC grains, enhancing the comprehensive performance of the cemented carbide. Optimal Vickers hardness and wear resistance were achieved at a vanadium content of 1.0 wt.%, although there was a slight reduction in fracture toughness.

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来源期刊
Journal of Alloys and Compounds
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.
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