Preparation of WC-Co powder by direct reduction and carbonization--颗粒学报PARTICUOLOGY

Yi, Z., Shao, G., Duan, X., Sun, P., Shi, X., Xiong, Z., & Guo, J. (2005). Preparation of WC-Co powder by direct reduction and carbonization. China Particuology, 3(5), 286-288. https://doi.org/10.1016/S1672-2515(07)60203-6

Preparation of WC-Co powder by direct reduction and carbonization

Zhonglai Yi, Gangqin Shao ^*, Xinglong Duan, Peng Sun, Xiaoliang Shi, Zhen Xiong, Jingkun Guo

State Key Laboratory of Advanced Technology for Materials Synthesis & Processing, Wuhan University of Technology, Wuhan 430070, P. R. China

10.1016/S1672-2515(07)60203-6

Volume 3, Issue 5, October 2005, Pages 286-288

Received 26 April 2005, Accepted 26 August 2005, Available online 14 December 2007.

E-mail: gqshao@mail.whut.edu.cn

Highlights

Abstract

A new approach to produce superfine WC-Co powder by direct reduction and carbonization is proposed. Water-soluble salts containing W and Co were used as raw materials. Tungsten and cobalt oxide powder (CoWO₄/WO₃) was first formed by a spray-pyrolysis technique, which was then mixed with carbon black and converted to WC-Co composite powder at 950°C for 4 h in N₂ atmosphere. The resulting powder has a particle size of 100–300 nm.

Graphical abstract

Keywords

tungsten carbide-cobalt (WC-Co); direct reduction and carbonization; composite powder

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