您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 5    October 2001

[PDF Download]    [Flash Online]

    

Effect of process parameters on induction
plasma reactive deposition of tungsten
carbide from tungsten metal powder
JIANG Xian-liang(蒋显亮)1, M.I.Boulos2

1. Institute of Surface and Coatings Technology,
Central South University,Changsha 410083, P.R.China;
2. Department of Chemical Engineering, University of Sherbrooke,
Sherbrooke, J1K2R1, Canada

Abstract:Tungsten carbide deposit was made directly from tungsten metal powder through the reaction with methane in radio frequency induction plasma. Effect of major process parameters on the induction plasma reactive deposition of tungsten carbide was studied by optical microscopy, scanning electron microscopy, X-ray diffraction analysis, water displacement method, and microhardness test. The results show that methane flow rate, powder feed rate, particle size, reaction chamber pressure and deposition distance have significant influences on the phase composition, density, and microhardness of the deposit. Extra carbon is necessary to ensure the complete conversion of tungsten metal into the carbide.

 

Key words: induction plasma; tungsten carbide; deposit; carburization; phase composition

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn