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	Properties evolution of additive manufacture used tungsten powders prepared by radio frequency induction plasma
	Wang, Lin-zhi1; Wu, Jiao-jiao1; Zhang, Dai-jun1; Wang, Lin-zhi2; Wu, Jiao-jiao2; Zhang, Dai-jun2
	2017-09-01
摘要	In this study, radio frequency induction plasma was adopted to improve tungsten powder properties to meet the requirements of additive manufacturing process. After plasma spheroidization process operated, tungsten particles changed from irregular shape to uniform spherical shape. The average size and oxygen content of raw tungsten powders were both decreased, meanwhile, the laser absorption coefficient was increased by plasma spheroidization process. Furthermore, a series of tests were carried out for raw and spherical tungsten powders to investigate the influence of plasma spheroidization process on powder flowability evolution. The results displayed that, plasma spheroidized powders had a better comprehensive flowability, such as basic flow property, aerated flow property, compressibility, permeability and shear property, comparing to raw tungsten powders. In conclusion, plasma spheroidized tungsten powders met demands of additive manufacturing process very well.
关键词	Tungsten powders Flowability Laser absorption coefficient Particle size distribution Radio frequency induction plasma Additive manufacturing
DOI	10.1016/j.ijrmlun.2017.05.007
发表期刊	INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
ISSN	0263-4368
卷号	67页码:90-97
通讯作者	Wu, JJ (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China.
收录类别	SCI
WOS记录号	WOS:000411548000010
语种	英语