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	Floating combustion synthesis of spherical vitreous silica nano-powder
	Zhu, Yuan ; Jin, Hai Bo ; Ren, Ke Gang ; Agathopoulos, Simeon ; Chen, Ke Xin
	2010-10-12 ; 2010-10-12
关键词	Amorphous materials Oxides Electron microscopy THERMAL-OXIDATION KINETICS Materials Science, Multidisciplinary
中文摘要	Vitreous silica nano-powder, with spherical particles of 50-300 nm in size, was successfully produced via floating combustion synthesis. Mechano-chemically activated and spray-dried Si-powder was oxidized in fluidized bed between 900 degrees C and 1550 degrees C in air. After 10 min, rapid removal of powder from the furnace and quenching maintained silica's vitreous nature. The process comprises sequential cycles of the following stages until nano-sized particles of silica are obtained. Superficial melting of Si-particles initially occurs and the particles obtain a spherical shape. The surface of the particles is oxidized. The stress at silica/silicon interface causes collapse of particles to smaller ones. (C) 2008 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78507]
专题	清华大学
推荐引用方式 GB/T 7714	Zhu, Yuan,Jin, Hai Bo,Ren, Ke Gang,et al. Floating combustion synthesis of spherical vitreous silica nano-powder[J],2010, 2010.
APA	Zhu, Yuan,Jin, Hai Bo,Ren, Ke Gang,Agathopoulos, Simeon,&Chen, Ke Xin.(2010).Floating combustion synthesis of spherical vitreous silica nano-powder..
MLA	Zhu, Yuan,et al."Floating combustion synthesis of spherical vitreous silica nano-powder".(2010).

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