期刊论文

Preparation of Spherical WC Metal Ceramic Powders Using an Induction Coupled Thermal Plasma

Chen, Lunjiang(lunjiangchen@163.com)

中文

高电压技术

1003-6520

2018

44

9

3043-3048

10.13336/j.1003-6520.hve.20180828036

基金资助项目：国家自然科学基金重点项目(11535003)。 Project supported by National Natural Science Foundation of China (11535003).

本校为第一机构

为了提高粉末的流动性,探索球形粉末的制备工艺,以感应耦合热等离子体作为高温热源,对不规则形状的微米级碳化钨（WC）粉体进行了球化处理实验,并研究了送粉量对粉末流动性、振实密度及粒径分布的影响,采用扫描电子显微镜（SEM）、霍尔流速计、能谱分析仪（EDS）和激光粒度分析仪分别对球化前后粉末的微观形貌、流动性、元素质量分数及粒度分布进行了表征和分析。研究结果表明：WC粉末经过感应耦合热等离子体球化处理后,可以得到表面光滑、分散性较好、流动性能佳和振实密度高的球形粉末;球化后粉末的氧和钨元素质量分数增加,而碳元素质量分数降低;经球化处理后,球形WC粉末粒径稍微变大;随着球化...

In order to improve the liquidity of powder and explore the preparation process of spherical powder, we prepared irregular shaped tungsten carbide (WC) powders for spherical powders using inductively coupled thermal plasma (ICTP) as a heating source. The influences the feeding rate of powders on flow-ability, tap density and distribution of particle size were investigated. The micro morphology, flow-ability, element of weight percentage and particle size were characterized with scanning electron microscopy (SEM), hall flow meters, energy disper...