Deformation of a ceramic/metal interface at the nanoscale

Lin Jiang; Tao Hu; Hanry Yang; Dalong Zhang; Troy Topping; Enrique J. Lavernia; Julie M. Schoenung

doi:10.1039/C6NR02011A

Deformation of a ceramic/metal interface at the nanoscale†

Lin Jiang,^ab Tao Hu,^bc Hanry Yang,^bd Dalong Zhang,^b Troy Topping,^be Enrique J. Lavernia^ab and Julie M. Schoenung*^ab

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* Corresponding authors

^a Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA

^b Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA
E-mail: jmschoenung@ucdavis.edu, julie.schoenung@uci.edu
Tel: +1 949 824 2725

^c Department of NanoEngineering, University of California, San Diego, CA 92093, USA

^d School of Mechanical and Materials Engineering, Washington State University, WA 99164, USA

^e Department of Mechanical Engineering, California State University, Sacramento, Sacramento, CA 95819, USA

Abstract

The mechanical response of heterophase interfaces has attracted substantial attention in recent years. Here, we utilized an in situ transmission electron microscopy (TEM) technique to isolate an individual nanoscale ceramic/metal interface and characterize its nanomechanical response. The interface, at which there was a Mg-rich segregation nanolayer between the single crystal ceramic (B₄C) and the polycrystalline metal (Al alloy, AA5083), was determined to have a bond strength greater than 1.5 GPa. Bimodal failure and metallic grain rotation occurred in the metallic region, allowing the interface to accommodate a deformation strain of 5.4%. The roles of elemental segregation and nanoscale dimensions on interfacial debonding mechanisms are discussed.

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DOI: https://doi.org/10.1039/C6NR02011A
Article type: Communication
Submitted: 09 Mar 2016
Accepted: 27 Apr 2016
First published: 27 Apr 2016

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Nanoscale, 2016,8, 10541-10547

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Deformation of a ceramic/metal interface at the nanoscale

L. Jiang, T. Hu, H. Yang, D. Zhang, T. Topping, E. J. Lavernia and J. M. Schoenung, Nanoscale, 2016, 8, 10541 DOI: 10.1039/C6NR02011A

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Deformation of a ceramic/metal interface at the nanoscale†

Abstract

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Deformation of a ceramic/metal interface at the nanoscale

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