Microstructural Characterization of Carbon Nanotubes (CNTs)-Reinforced Nickel Matrix Nanocomposites

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Sónia Simões (Autor) FEUP; Íris Carneiro (Autor) Outra; Filomena Viana (Autor) FEUP; Marcos A. L. Reis (Autor) Outra; Manuel F. Vieira (Autor) FEUP

Revista

Título: Microscopy and Microanalysis

Vol. 25 Nº 1

Páginas: 180-186

ISSN: 1431-9276

Editora: Cambridge University Press

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 9 Citações

Outras Informações

ID Authenticus: P-00P-N9G

DOI: 10.1017/s1431927618015064

Abstract (EN): This research focuses on the microstructural characterization of nickel matrix composites reinforced by carbon nanotubes (CNTs). The nanocomposites were produced by a conventional powder metallurgy process and the dispersion of CNTs and mixture with nickel powders was performed in a single step by ultrasonication. Microstructural characterization of Ni-CNT nanocomposites was performed by scanning and transmission electron microscopy, electron backscattered diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, and fast Fourier transform analyses. This characterization revealed CNTs embedded in the nickel grains and mainly presented as clusters at the grain boundaries. CNTs hinder recrystallization during sintering, and dislocation cells and subgrains form as a result of the recovery process.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7