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Indentation Study of 2D Carbides for Manufacturing Novel Multifunctional Composites

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Technical Report,18 Aug 2014,17 May 2015

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Drexel University Philadelphia United States

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Two-dimensional 2D materials beyond graphene are attracting much attention. Recently, we discovered a new family of 2D transition metals carbides and carbonitrides called MXenes. Unlike graphene, MXene family is very diverse and to date the number of synthesized MXenes reaches 17 members, including Ti3C2, Nb2C, V2C, Ta4C3, Cr2TiC2, Mo2TiC2, etc. Although MXenes have shown very attractive electrical, electrochemical properties, their mechanical properties are yet to be characterized. There are neither experimental measurements reported in literature nor prediction of strength and fracture modes for single-layer MXenes. In this 9-month research study, we took the first steps to investigate MXenes mechanical properties in both theoretical and experimental aspects. Molecular dynamics was used to predict stress-strain curves of all Tin1Cn MXenes under tensile deformation. In addition, atomic force microscopy on Ti3C2 flakes and nanoindentation on Ti3C2-polymer composite films were performed to experimentally characterize MXenes mechanical properties.

Subject Categories:

  • Inorganic Chemistry
  • Miscellaneous Materials
  • Mechanics
  • Atomic and Molecular Physics and Spectroscopy

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