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	Particle shape modification and related property improvements
	Gai, Guosheng ; Yang, Wen ; Jin, Lan ; Zou, Xin ; Wu, Yunxin
	2010-05-10 ; 2010-05-10
会议名称	POWDER TECHNOLOGY ; UK-China Particle Technology Forum ; Leeds, ENGLAND ; Web of Science
关键词	metal powders particle composite system (PCS) shape modification spheroidizing process Engineering, Chemical
中文摘要	The increasing sophistication of powder metallurgy processing, together with the greater demands on final product quality have led to an increased demand for metal powders of high quality. In this paper we report the successful preparation of two spheroidized metal powders, electrolytic copper powder mixed with Al2O3 particles and hydrogenation-dehydrogenation (HDH) titanium powder - produced by high speed impact using a particle composite system (PCS). Experimental results show that irregularly shaped metal particles can be processed into spherical particles by use of this process. The spheroidizing process increases bulk density of Ti powder from 1.15 g/cm(3) to 1.73 g/cm(3) and its fluidity index from 46 to 71, improves surface morphology of either single Ti particles or composite Al2O3/Cu particles and molding properties of bulk powders. The characteristics of sintered parts made from spheroidized powders are superior to those of products made from the untreated irregular powders. (C) 2007 Elsevier B.V. All rights reserved.
会议录出版者	ELSEVIER SCIENCE SA ; LAUSANNE ; PO BOX 564, 1001 LAUSANNE, SWITZERLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/17986]
专题	清华大学
推荐引用方式 GB/T 7714	Gai, Guosheng,Yang, Wen,Jin, Lan,et al. Particle shape modification and related property improvements[C]. 见:POWDER TECHNOLOGY, UK-China Particle Technology Forum, Leeds, ENGLAND, Web of Science.

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