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

页码：9991 / 9995

页数：5

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