Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface

doi:10.1016/j.actamat.2004.11.003

IMR OpenIR

	Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface
	Mei, QS; Wang, SC; Cong, HT; Jin, ZH; Lu, K
通讯作者	Lu, K()
	2005-02-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	53 期号:4 页码:1059-1066
摘要	Quantitative measurements were carried out on the pressure effect of superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interfaces. In situ XRD experiments revealed that encapsulated Al nanoparticles with different particle sizes can be superheated to 7-15 K beyond the bulk equilibrium melting point of Al, and that this is accompanied by a suppressed thermal expansion behavior. A value for the pressure build-up on the At core due to the constraint of the rigid Al2O3 shell of up to 0.25 GPa was derived from the temperature dependence of the lattice spacing for the superheated samples. The correlation between the measured pressure and superheating verified that the observed superheating is a pressure-induced phenomenon which follows the Clausius-Clapeyron relation. It was demonstrated that substantial superheating can be achieved by a pressure build-up even without confinement of epitaxial interfaces for a metal/ceramic system. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	melting superheating in situ X-ray diffraction nanoparticles pressure effect
DOI	10.1016/j.actamat.2004.11.003
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000226774500016
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/83948
专题	中国科学院金属研究所
通讯作者	Lu, K
作者单位	Chinese Acad Sci, Met Res Inst, SYNL, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Mei, QS,Wang, SC,Cong, HT,et al. Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface[J]. ACTA MATERIALIA,2005,53(4):1059-1066.
APA	Mei, QS,Wang, SC,Cong, HT,Jin, ZH,&Lu, K.(2005).Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface.ACTA MATERIALIA,53(4),1059-1066.
MLA	Mei, QS,et al."Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface".ACTA MATERIALIA 53.4(2005):1059-1066.