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Tensile and compressive microspecimen testing of bulk nanoporous gold

  • Nanomechanical Testing
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Abstract

Nanoporous gold (np-Au) is a macroscopically brittle material, which poses difficulties for tensile testing of bulk specimens. By combining a fabrication approach that minimizes cracking in bulk np-Au and a microspecimen test technique that permits small testing volumes, both tension and compression tests were performed on sub-millimeter gage thicknesses of np-Au. Compressive strength was higher than tensile strength, as would be expected for a brittle material, but all strength values were significantly lower than literature values for nanoindentation testing. Measured elastic modulus was nearly the same in tension and compression, and was much lower than Gibson-Ash-by scaling relations would predict for porous gold with this density.

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Authors and Affiliations

  1. Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA

    T. John Balk & Ye Sun

  2. Karlsruhe Institute of Technology, izbs, Karlsruhe, Germany

    Chris Eberl

  3. Mechanical Engineering, The Johns Hopkins University, Baltimore, MD, USA

    Chris Eberl & Kevin J. Hemker

  4. Forschungszentrum Karlsruhe, Institut für Materialforschung II, Karlsruhe, Germany

    Daniel S. Gianola

  5. Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA

    Daniel S. Gianola

Authors
  1. T. John Balk
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  2. Chris Eberl
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  3. Ye Sun
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  4. Kevin J. Hemker
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  5. Daniel S. Gianola
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Correspondence to T. John Balk.

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Balk, T.J., Eberl, C., Sun, Y. et al. Tensile and compressive microspecimen testing of bulk nanoporous gold. JOM 61, 26–31 (2009). https://doi.org/10.1007/s11837-009-0176-6

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  • DOI: https://doi.org/10.1007/s11837-009-0176-6

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