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Focused ion beam characterization of deformation resulting from nanoindentation of nanoporous gold

Published online by Cambridge University Press:  18 January 2018

Nicolas J. Briot Open the ORCID record for Nicolas J. Briot [Opens in a new window]  and
T. John Balk
Nicolas J. Briot*
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower, Lexington, KY 40506, USA
T. John Balk
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower, Lexington, KY 40506, USA
*
Address all correspondence to Nicolas J. Briot at njbr222@uky.edu
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Abstract

Regions of deformation resulting from nanoindentation testing of nanoporous gold (np-Au) are characterized by cross-sectional imaging of the ligament structure directly beneath the surface, after lift-out using focused ion beam techniques. Permanent deformation of the porous structure was not exclusively confined to the region directly in contact with the indenter but extended much deeper into the sample. Implications of these observations with respect to previous measurements of the mechanical properties of np-Au are discussed. The conclusions provide initial insight into the deformation behavior of np structures during nanoindentation, as well as a basis for extending this technique to other np metals.

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Type
Research Letters
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MRS Communications , Volume 8 , Issue 1 , March 2018 , pp. 132 - 136
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Copyright © Materials Research Society 2018 

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