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

被引：35

作者：

Li, Rui ^{[1
]}

Qin, Mingli ^{[1
]}

Huang, Hua ^{[1
]}

Liu, Chengcheng ^{[1
]}

Chen, Zheng ^{[1
]}

Huang, Min ^{[1
]}

Zhang, Lin ^{[1
]}

Qu, Xuanhui ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

来源：

ADVANCED POWDER TECHNOLOGY | 2017年 / 28卷 / 12期

关键词：

Surface morphology; Spherical tungsten powder; RF induction plasma spheroidization; Jet milling; Powder technology; THERMAL PLASMA; PARTICLES; SHAPE;

D O I：

10.1016/j.apt.2017.09.019

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Fine-grained spherical tungsten powder with particle size from 6 mu m to 11 mu m 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. (C) 2017 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：3158 / 3163

页数：6