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Size Effect on the Strength and Deformation Behavior of Glassy Carbon Nanopillars

Published online by Cambridge University Press:  02 January 2019

Almut Albiez  and
Ruth Schwaiger Open the ORCID record for Ruth Schwaiger [Opens in a new window]
Almut Albiez
Affiliation:
Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
Ruth Schwaiger*
Affiliation:
Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
*
*Corresponding author: Ruth Schwaiger, e-mail: ruth.schwaiger@kit.edu

Abstract

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Glassy carbon nanolattices can exhibit very high strength-to-weight ratios as a consequence of their small size and the material properties of the constituent material. Such nanolattices can be fabricated by pyrolysis of polymeric microlattices. To further elucidate the influence of the mechanical size effect of the constituent material, compression tests of glassy carbon nanopillars with varying sizes were performed. Depending on the specific initial polymer material and the nanopillar size, varying mechanical properties were observed. Small nanopillars exhibited elastic-plastic deformation before failure initiation. Moreover, for smaller nanopillars higher strength values were observed than for larger ones, which might be related to smaller defects and a lower defect concentration in the material.

Keywords

3D printingstrengthpyrolysisnanoscale
Type
Articles
Information
MRS Advances , Volume 4 , Issue 2: Characterization, Mechanical Properties and Structure-Property Relationships , 2019 , pp. 133 - 138
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © Materials Research Society 2018

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