Carbon nanotube reinforced nickel matrix nanocomposites fabricated by spark plasma sintering process
- Carbon nanotube reinforced nickel matrix nanocomposites fabricated by spark plasma sintering process
- 황준연; 홍경태; Tiley, J; Banerjee, R; 홍순형
- carbon nanotube; metal matrix composite; spark plasma sintering; TEM
- Issue Date
- 대한금속재료학회 춘계 학술대회
- The carbon nanotube reinforced Ni matrix nanocomposites have been synthesized using spark plasma sintering process. Two different types of pre-mixed powders have been prepared by molecular-level mixing process and ball milling process. The CNT/Ni nanocomposites sintered using molecular level mixed CNT/Ni nanocomposite powder showed significant improvement in yield strength compared to ball milled Ni-CNT nanocomposite. The improvement in mechanical properties has been attributed due to homogeneous distribution of CNTs in to nickel matrix as well good bonding and high strength of Ni-CNT interface that helps significantly to transfer load between CNT and nickel matrix. These nanocomposites have been characterized in detail using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and, Raman spectroscopy in order to determine the state of the nanotubes post processing, their distribution, as well as the nature of the nanotube/matrix interface.
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