Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/91256
Autor(es): | Sónia Simões Filomena Viana Marcos A. L. Reis Manuel F. Vieira |
Título: | Improved dispersion of carbon nanotubes in aluminum nanocomposites |
Data de publicação: | 2014 |
Resumo: | In this study, we investigated the influence of the dispersion technique of carbon nanotubes (CNT) in the production of aluminum matrix nanocomposites. Three production routes using different dispersion techniques were tested: in R1 route the CNT were dispersed using an ultrasonic bath; in R2 route the dispersion was achieved by ultrasonication, while in R3 route the dispersion and mixing were performed by ultrasonication CNT and Al powders. Nanocomposites with several CNT contents (0.25-2.0 wt.%) were produced by conventional powder metallurgy procedures. Microstructural characterization by scanning and transmission electron microscopies revealed that the best dispersion of the CNT is obtained using R3 route. Nanocomposites with 0.75 wt.% of CNT exhibit well dispersed and embedded nanotubes and the highest hardness and tensile strength. The observed 200% increase in the tensile strength attested the strengthening effect of the CNT and the efficiency of the new dispersion treatment (R3 route). |
Assunto: | Engenharia de materiais, Engenharia, Engenharia dos materiais Materials engineering, Engineering, Materials engineering |
Áreas do conhecimento: | Ciências da engenharia e tecnologias::Engenharia dos materiais Engineering and technology::Materials engineering |
URI: | https://hdl.handle.net/10216/91256 |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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88665.pdf Restricted Access | 3.82 MB | Adobe PDF | Request a copy from the Author(s) |
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