Nanohardness and elastic modulus at the interface of TiCx/NiAl composites determined by the nanoindentation technique

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	Nanohardness and elastic modulus at the interface of TiCx/NiAl composites determined by the nanoindentation technique
	Hua, WS ; Wu, XF ; Shen, DH ; Lu, H ; Polak, M
刊名	SURFACE AND INTERFACE ANALYSIS
	2004
卷号	36 期号:2 页码:143
关键词	MECHANICAL-PROPERTIES NANOMETER-SCALE MICROSTRUCTURE HARDNESS OPTIMIZATION SAPPHIRE
ISSN号	0142-2421
通讯作者	Wu, XF (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China.
中文摘要	Monodisperse cobalt nanoparticles are synthesized via a high-temperature thermal decomposition method in the presence of oleic acid and triphenylphosphine. The as-synthesized nanoparticles are stable against further deep oxidation when they are kept in heptane (C7H16). Time-dependent XPS studies indicate that oxidation of the as-synthesized cobalt nanoparticles in air is slow. The valence change of cobalt from the nanoparticle sample is not observed after it is kept in heptane under air for 90 days. The cobalt nanoparticles have a beta-manganese-type structure (also called epsilon-Co). Annealing the nanoparticles at 500degreesC under Ar (95%) + H-2 (5%) converts these particles from epsilon-Co to fcc-Co. Two-dimensional and three-dimensional self-assembled superlattices of the passivated cobalt nanoparticles are formed by slow evaporation of the carrier solvent. The magnetic properties of the cobalt nanoparticles in different forms are compared, which provides helpful information on the magnetostatic interaction of the nanoparticles. Copyright (C) 2004 John Wiley Sons, Ltd.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/49589]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Hua, WS,Wu, XF,Shen, DH,et al. Nanohardness and elastic modulus at the interface of TiCx/NiAl composites determined by the nanoindentation technique[J]. SURFACE AND INTERFACE ANALYSIS,2004,36(2):143.
APA	Hua, WS,Wu, XF,Shen, DH,Lu, H,&Polak, M.(2004).Nanohardness and elastic modulus at the interface of TiCx/NiAl composites determined by the nanoindentation technique.SURFACE AND INTERFACE ANALYSIS,36(2),143.
MLA	Hua, WS,et al."Nanohardness and elastic modulus at the interface of TiCx/NiAl composites determined by the nanoindentation technique".SURFACE AND INTERFACE ANALYSIS 36.2(2004):143.