Synthesis and mechanical behavior of nanoporous nanotwinned copper

Ran Liu; Shijian Zheng; Jon Kevin Scott Baldwin; Mary Kuthuru; Nathan Mara; Antonia Antoniou

doi:10.1063/1.4841455

Synthesis and mechanical behavior of nanoporous nanotwinned copper

Ran Liu
, Shijian Zheng
, Jon Kevin Scott Baldwin
, Mary Kuthuru
, Nathan Mara
, Antonia Antoniou

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We synthesize nanoporous copper (NP Cu) through electrochemical dealloying of amorphous Cu0.41Si0.59 under compressive residual stress. Transmission Electron Microscopy reveals that struts are nanocrystalline with grain size equal to the strut thickness. Moreover, a significant population of twins with spacing ∼7 nm is present within each imaged grain. The hardness of this nanocrystalline, nanotwinned NP Cu is approximately one order of magnitude greater than reports on NP Cu in the literature. The yield strength of individual struts inferred through dimensional analysis is approximately an order of magnitude greater than bulk copper and compares well with other nanostructured copper systems. © 2013 AIP Publishing LLC.

Original language	English
Journal	Applied Physics Letters
Volume	103
Issue number	24
DOIs	https://doi.org/10.1063/1.4841455
State	Published - Dec 9 2013

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title = "Synthesis and mechanical behavior of nanoporous nanotwinned copper",

abstract = "We synthesize nanoporous copper (NP Cu) through electrochemical dealloying of amorphous Cu0.41Si0.59 under compressive residual stress. Transmission Electron Microscopy reveals that struts are nanocrystalline with grain size equal to the strut thickness. Moreover, a significant population of twins with spacing ∼7 nm is present within each imaged grain. The hardness of this nanocrystalline, nanotwinned NP Cu is approximately one order of magnitude greater than reports on NP Cu in the literature. The yield strength of individual struts inferred through dimensional analysis is approximately an order of magnitude greater than bulk copper and compares well with other nanostructured copper systems. {\textcopyright} 2013 AIP Publishing LLC.",

author = "Ran Liu and Shijian Zheng and Baldwin, \{Jon Kevin Scott\} and Mary Kuthuru and Nathan Mara and Antonia Antoniou",

year = "2013",

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doi = "10.1063/1.4841455",

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journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Synthesis and mechanical behavior of nanoporous nanotwinned copper

AU - Liu, Ran

AU - Zheng, Shijian

AU - Baldwin, Jon Kevin Scott

AU - Kuthuru, Mary

AU - Mara, Nathan

AU - Antoniou, Antonia

PY - 2013/12/9

Y1 - 2013/12/9

N2 - We synthesize nanoporous copper (NP Cu) through electrochemical dealloying of amorphous Cu0.41Si0.59 under compressive residual stress. Transmission Electron Microscopy reveals that struts are nanocrystalline with grain size equal to the strut thickness. Moreover, a significant population of twins with spacing ∼7 nm is present within each imaged grain. The hardness of this nanocrystalline, nanotwinned NP Cu is approximately one order of magnitude greater than reports on NP Cu in the literature. The yield strength of individual struts inferred through dimensional analysis is approximately an order of magnitude greater than bulk copper and compares well with other nanostructured copper systems. © 2013 AIP Publishing LLC.

AB - We synthesize nanoporous copper (NP Cu) through electrochemical dealloying of amorphous Cu0.41Si0.59 under compressive residual stress. Transmission Electron Microscopy reveals that struts are nanocrystalline with grain size equal to the strut thickness. Moreover, a significant population of twins with spacing ∼7 nm is present within each imaged grain. The hardness of this nanocrystalline, nanotwinned NP Cu is approximately one order of magnitude greater than reports on NP Cu in the literature. The yield strength of individual struts inferred through dimensional analysis is approximately an order of magnitude greater than bulk copper and compares well with other nanostructured copper systems. © 2013 AIP Publishing LLC.

UR - https://www.scopus.com/pages/publications/84890486024

U2 - 10.1063/1.4841455

DO - 10.1063/1.4841455

M3 - Article

SN - 0003-6951

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

ER -

Synthesis and mechanical behavior of nanoporous nanotwinned copper

Abstract

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