Growth dynamics and thermal stability of Ni nanocrystalline nanowires

被引：10
|
作者：
Zhou, Z. F. [1 ,2 ]
Pan, Y. [1 ,2 ]
Zhou, Y. C. [1 ,2 ]
Yang, L. [3 ]
机构：
[1] Xiangtan Univ, Fac Mat Optoelect & Phys, Xiangtan 411105, Hunan, Peoples R China
[2] Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Hunan, Peoples R China
[3] Natl Phys Lab, Analyt Sci Div, Teddington TW11 0LW, Middx, England
来源：
APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 23期
关键词：
Nanocrystalline materials; Grain boundaries; Thermal properties; Rayleigh instability; GRAIN-GROWTH; MORPHOLOGICAL-CHANGES; SIZE; NANOSTRUCTURES; SIMULATIONS;
D O I：
10.1016/j.apsusc.2011.06.125
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The growth dynamics and the thermal stability of a Ni nanocrystalline nanowire (NNW) model system fabricated using electrochemical deposition has been investigated using X-ray diffraction, scanning and transition electron microcopy, and differential scanning calorimetry (DSC). It has been found that the thermal stability of the Ni-NNW is dominated by the microstructure movement and the grain boundary rotation mechanism at temperature ranging from 400 to 600 degrees C. The Ni-NNW experiences the Rayleigh instability at temperature approaching the melting point. The observed fragment separation in the Rayleigh phase-transition is much greater than that expected theoretically. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：9991 / 9995
页数：5
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