Melting process of nanometer-sized In particles embedded in an Al matrix synthesized by ball milling

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	Melting process of nanometer-sized In particles embedded in an Al matrix synthesized by ball milling
	H. W. Sheng; J. Xu; L. G. Yu; X. K. Sun; Z. Q. Hu; K. Lu
	1996
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	11 期号:11 页码:2841-2851
摘要	Dispersions of nanometer-sized In particles embedded in an Al matrix (10 wt. % In) have been synthesized by ball milling of a mixture of Al and In powders. The as-milled product was characterized by using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray spectrometer (EDX), transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HREM), respectively. It was found that In and Al are pure components immiscible with each other, with nanometer-sized In particles dispersively embedded in the Al matrix. The melting behavior of In particles was investigated by means of differential scanning calorimeter (DSC). The calorimetric measurements indicate that both the melting point and the melting enthalpy of the In nanoparticles decrease with increasing milling time, or refinement of the In particles. Compared to its bulk melting temperature, a melting point depression of 13.4 K was observed when the mean grain size of In is 15 nm, and the melting point depression of In nanoparticles is proportional to the reciprocal of the mean grain size. The melting enthalpy depression was interpreted according to the two-state concept for the nanoparticles. Melting of the interface was deduced to be an exothermal process due to its large excess energy/volume.
部门归属	sheng, hw (reprint author), chinese acad sci, state key lab rsa, inst met res, shenyang 110015, peoples r china
关键词	Electron-microscopy Freezing Behavior Porous Glasses Sn Aluminum Powders Metals State Microstructure Amorphization
URL	查看原文
WOS记录号	WOS:A1996VT78400024
引用统计	被引频次：30[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/321006/38389
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. W. Sheng,J. Xu,L. G. Yu,et al. Melting process of nanometer-sized In particles embedded in an Al matrix synthesized by ball milling[J]. Journal of Materials Research,1996,11(11):2841-2851.
APA	H. W. Sheng,J. Xu,L. G. Yu,X. K. Sun,Z. Q. Hu,&K. Lu.(1996).Melting process of nanometer-sized In particles embedded in an Al matrix synthesized by ball milling.Journal of Materials Research,11(11),2841-2851.
MLA	H. W. Sheng,et al."Melting process of nanometer-sized In particles embedded in an Al matrix synthesized by ball milling".Journal of Materials Research 11.11(1996):2841-2851.