FABRICATION AND CHARACTERIZATION OF HIGH-PERFORMANCE CARBON NANOTUBE REINFORCED MAGNESIUM COMPOSITES

DOI IR (HANDLE)

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Other Title
  • 高強度カーボンナノチューブ/マグネシウム複合材料の作製と機械的特性評価

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Description

Over the past couple of decades, carbon nanotubes (CNTs) have been receiving much attention because of their excellent properties such as light weight, high elastic modulus, and high strength. However, it is known that CNTs aggregate in a state where tubes are entangled with each other due to π-π interaction and van der Waals force. To reflect the superior properties of CNTs in the composites, it is necessary to separate and disperse them to the level of each other. In this study, CNTs were put into an organic solvent (DMAc) with a dispersant ((NH_4)_2CO_3), which were followed by ultrasonic treatments to prevent CNT aggregation and separate/ disperse CNTs. To fabricate CNT/ Mg composites containing a small amount of Sn, CNTs and Mg with Sn powders were mixed and consolidated by spark plasma sintering (SPS). How the dispersing treatments affect states of dispersion of CNTs and mechanical properties of the CNT/ Mg composites was investigated. Microstructures of the composites were observed using a scanning electron microscope (SEM) with EDS, and transmission electron microscope (TEM). Mechanical properties were investigated on Vickers hardness, anisotropic tensile behavior and fatigue life and fracture. The Bauschinger effect was also investigated by tension-compression tests.

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Details 詳細情報について

  • CRID
    1390015100310697088
  • DOI
    10.15002/00026296
  • HANDLE
    10114/00026296
  • ISSN
    24368083
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • JaLC
    • IRDB
  • Abstract License Flag
    Allowed

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