Internal friction of nanocrystalline silver

被引：0
作者：
Wang, YZ [1 ]
Cui, P
Wu, XJ
Huang, JB
Cai, B
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Internal Frict & Defects Solids Lab, Hefei 230031, Peoples R China
[2] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2001年 / 186卷 / 01期
关键词：
D O I：
10.1002/1521-396X(200107)186:1<99::AID-PSSA99>3.0.CO;2-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Low frequency internal friction and shear modulus of nanocrystalline silver were measured by both force vibration and free decay methods. The specimens were prepared by inert gas condensation and in situ warm compaction. The average grain size of the specimens was 52 nm. An internal friction peak was observed around 450 K. The activation energy of the peak was measured to be 0.88 (+/-0.1) eV, in agreement with that of grain boundary diffusion in silver. The internal friction peak is suggested to be associated with grain boundary relaxation.
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页码：99 / 104
页数：6
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