Effective Dispersion of CNTs to Fabricate CNT/Mg Nanocomposite

Abstract:

An effective dispersion process to cast CNT-reinforced in a concentrated magnesium alloy (AZ31) nanocomposite was investigated in this study. The metal magnesium powder was first coated with dispersed CNTs by wet process, followed by the fabricating of CNT/Mg precursor using mechanical briquetting and extrusion. The resultant precursor was then added into AZ31 alloy during the melting process. Finally, CNT/Mg nanocomposites with grain refinement matrix composite were fabricated in as-cast and as-extruded. Compared with the commercial AZ31 alloy, CNT/Mg nanocomposites exhibited higher yield strength of 270 MPa with an increase of 22.7%, which can be largely ascribed to the effective dispersion process of CNTs in the alloy matrix, and the elongation is no significant decrease.

• Periodical: Materials Science Forum (Volume 816)
• Pages: 470-475
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.816.470
• Online since: April 2015
• Authors: Guo Qiang Han, Wen Bo Du*, Zhao Hui Wang, Ke Liu, Shu Bo Li, Xian Du
• Keywords: Carbon Nanotubes (CNTs), Dispersion, Microstructure, Nanocomposites

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