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  In-situ observations of the fracture and adhesion of Cu/Nb multilayers on polyimide substrates

Cordill, M. J., Kleinbichler, A., Völker, B., Kraker, P., Economy, D. R., Economy, D. R., et al. (2018). In-situ observations of the fracture and adhesion of Cu/Nb multilayers on polyimide substrates. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 735, 456-462. doi:10.1016/j.msea.2018.08.043.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-1B51-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-1B52-4
Genre: Journal Article

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 Creators:
Cordill, Megan Jo1, 2, Author              
Kleinbichler, Andreas3, 4, Author              
Völker, Bernhard5, 6, 7, Author              
Kraker, P.8, Author              
Economy, David Ross9, 10, Author              
Economy, David Ross10, Author              
Többens, Daniel Maria11, Author              
Kirchlechner, Christoph12, Author              
Kennedy, Marian S.9, Author              
Affiliations:
1Erich Schmid Institute of Materials Science, Leoben, Austria, ou_persistent22              
2Department Materials Physics, Montanuniversitt Leoben, Jahnstrae 12, A-8700 Leoben, Austria, ou_persistent22              
3Department of Materials Physics, Montanuniversität Leoben, Jahnstrasse 12, Leoben, Austria, persistent22              
4Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstrasse 12, Leoben, Austria, persistent22              
5Department of Materials Physics, Montanuniversität Leoben, Austria, ou_persistent22              
6Materials Chemistry, RWTH Aachen University, Aachen, Germany, ou_persistent22              
7Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria, ou_persistent22              
8Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, and Department of Material Physics, Montanuniversität Leoben, Jahnstrasse 12, Leoben 8700, Austria, persistent22              
9Department of Materials Science & Engineering, Clemson University, Olin Hall, Clemson, SC 29634, USA, persistent22              
10Micron Technology Inc., Technology Development, Boise, ID 83707, USA, persistent22              
11Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany, ou_persistent22              
12Nano-/ Micromechanics of Materials, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863401              

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Free keywords: Adhesion; Deposition; Elasticity; Fracture; Magnetron sputtering; Multilayer films; Nanotechnology; Polyimides; Residual stresses; Substrates; Tensile stress; Yield stress, Confocal laser scanning microscopy; In-situ observations; In-situ X-ray diffraction; Initial residual stress; Interfacial adhesions; Metallic multilayers; Polyimide substrate; Tensile loading condition, Multilayers
 Abstract: Cu/Nb nanoscale metallic multilayers have been extensively investigated to understand how their mechanical behavior is influenced by the individual layer thickness. The general observed trend is that the yield stress of the multilayer increases with decreasing layer thickness. Important mechanical behaviors that have not been studied in-depth are the fracture of these multilayers and adhesion energy between the multilayer films and their substrate. Here, the influences of the layer thickness, layer order, and initial residual stresses of Cu/Nb multilayers on polyimide were examined using in-situ x-ray diffraction and confocal laser scanning microscopy under tensile loading. With these techniques, it was possible to calculate the stresses developing in the individual materials and measure buckles that could be used to evaluate the interfacial adhesion. Layer thickness, deposition order, and the initial residual stresses were not shown to influence the initial fracture strains of the Cu/Nb multilayer systems under tensile loading conditions. However, the adhesion energy between the multilayer and substrate was affected by the layer deposition order and by the initial residual stresses. © 2018 Elsevier B.V.

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Language(s): eng - English
 Dates: 2018-09-26
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.msea.2018.08.043
BibTex Citekey: Cordill2018456
 Degree: -

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Title: Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
  Abbreviation : Mater. Sci. Eng. A: Struct. Mater. Prop. Microstruct. Process.
Source Genre: Journal
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Publ. Info: New York, NY : Elsevier
Pages: - Volume / Issue: 735 Sequence Number: - Start / End Page: 456 - 462 Identifier: ISSN: 0921-5093
CoNE: /journals/resource/954928498465_1