Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 51, Issue 11, Pages 1619-1629Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998316658784
Keywords
Metal matrix composites; interfacial phenomena; carbon nanotubes; mechanical properties
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Funding
- Universidad Nacional de Colombia at Medellin
- Centro de Investigacion en Materiales Avanzados (CIMAV-Mexico)
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Recently, a new manufacturing process for the production of metallic matrix composite materials reinforced with carbon nanotubes, known as sandwich technique has been proposed. This technique produces a material comprised of a metallic matrix and a banded structures-layers of multi-walled carbon nanotubes. However, among other issues, the matrix-reinforcement interface and the reinforcement dispersion degree are still open questions. The present study uses field emission scanning electron microscopy and high resolution transmission electron microscopy to probe that the method is capable to achieve a good dispersion of the multi-walled carbon nanotubes with no evidence of carbon nanotubes' damage. The mechanical properties were measured by tensile and nanoindentation tests; improvements in the elastic modulus, yield and ultimate strengths were found, with respect to the unreinforced material.
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