Fabrication of fine-grained spherical tungsten powder by radio frequency (RF) inductively coupled plasma spheroidization combined with jet milling

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2017-12-01 Epub Date: 2017-10-03 DOI:10.1016/j.apt.2017.09.019

Rui Li, Mingli Qin, Hua Huang, Chengcheng Liu, Zheng Chen, Min Huang, Lin Zhang, Xuanhui Qu

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引用次数: 18

Abstract

Fine-grained spherical tungsten powder with particle size from 6 μm to 11 μm has been fabricated by a well-designed method with two simple steps. A pretreatment of tungsten powder was carried out in the first step. Complete dispersion, effective classification and favorable shape modification have been achieved by jet milling process. Accordingly, monodisperse tungsten powders with narrow particle size distribution were obtained. On the basis of the existing calculation and simulation results, plasma spheroidization parameters have been optimized. Thus, fine-grained spherical tungsten powder with narrow particle size distribution has been prepared by subsequent radio frequency (RF) inductively coupled plasma spheroidization. Furthermore, the presented method can be useful in fabricating spherical tungsten powder of different particle size with narrow particle size distribution as well as for process control in large-scale continuous production.

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射频（RF）电感耦合等离子体球化结合射流铣削制备细粒球形钨粉

通过精心设计的两步制备方法，制备出粒径为6 ~ 11 μm的球形细晶钨粉。首先对钨粉进行预处理。射流铣削工艺实现了完全的分散、有效的分级和良好的形状改性。由此制备出粒径分布窄的单分散钨粉。在已有计算和仿真结果的基础上，对等离子体球化参数进行了优化。因此，采用射频电感耦合等离子体球化法制备了粒度分布窄的细粒度球形钨粉。此外，该方法可用于制备粒度分布较窄的不同粒度球形钨粉，并可用于大规模连续生产的工艺控制。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)