Issue 12, 2011
From the journal:

Journal of Materials Chemistry

In situ characterization of tensile-bending load bearing ability of multi-walled carbon nanotubes in alumina-based nanocomposites

Mehdi Estili,*a   Akira Kawasaki,a   Yoko Pittini-Yamada,b   Ivo Utkec  and  Johann Michlerc  

* Corresponding authors

a Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, Japan
E-mail: Estili@material.tohoku.ac.jp, mehdiestili@gmail.com
Fax: +81 22 795 7356
Tel: +81 22 795 7312

b EMPA, Swiss Federal Laboratories for Materials Science and Technology, Advanced Materials Processing, Feuerwerkerstrasse 39, Thun, Switzerland

c EMPA, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Mechanics of Materials and Nanostructures, Feuerwerkerstrasse 39, Thun, Switzerland

Abstract

The tensile-bending load bearing ability (LBA) of individual multi-walled carbon nanotubes (MWCNTs) embedded in α-alumina ceramic was examined using a unique, in situ method, in which a nano-manipulator and an electron microscope were simultaneously used. Considerably improved LBA compared to near-perfect, straight, arc discharge-grown MWCNTs in vacuum was observed even for MWCNTs under large deflections, which is attributed to the strong inter-wall shear resistance engineered in MWCNT structure due to the radial compressive stress applied from the surrounding alumina ceramic. Crystallinity and exceptional flexibility of MWCNTs after incorporation into the alumina by using spark plasma sintering were shown to remain unchanged. Our results confirm a mutual strengthening phenomenon in MWCNT/alumina nanocomposites and that even MWCNTs with large deflections are an exceptional reinforcement for alumina-based nanocomposites, though they require uniform dispersion and intimate interfaces.

Graphical abstract: In situ characterization of tensile-bending load bearing ability of multi-walled carbon nanotubes in alumina-based nanocomposites

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C0JM03906C
Article type
Paper
Submitted
12 Nov 2010
Accepted
24 Dec 2010
First published
14 Feb 2011

J. Mater. Chem., 2011,21, 4272-4278

Permissions

Request permissions

In situ characterization of tensile-bending load bearing ability of multi-walled carbon nanotubes in alumina-based nanocomposites

M. Estili, A. Kawasaki, Y. Pittini-Yamada, I. Utke and J. Michler, J. Mater. Chem., 2011, 21, 4272 DOI: 10.1039/C0JM03906C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements