Evaluation of a dry ball-milling technique as a method for mixing boron carbide and carbon nanotube powders

To evaluate the mixing effectiveness of dry ball-milling, multi-walled carbon nanotubes were ball-milled with boron carbide powder, and the resulting mixtures were hot pressed to consolidated tiles. Density, hardness, Young's modulus, and fracture strength of the tiles were measured; all decrea...

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Bibliographic Details
Published in:Ceramics international 2005, Vol.31 (5), p.765-768
Main Authors: Woodman, R.H., Klotz, B.R., Dowding, R.J.
Format: Article
Language:English
Subjects:
A. Mixing
Applied sciences
B. Composites
Building materials. Ceramics. Glasses
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
D. Carbides
Exact sciences and technology
Machining, milling
Materials science
Materials synthesis
materials processing
Other materials
Physics
Specific materials
Structural ceramics
Technical ceramics
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Summary:To evaluate the mixing effectiveness of dry ball-milling, multi-walled carbon nanotubes were ball-milled with boron carbide powder, and the resulting mixtures were hot pressed to consolidated tiles. Density, hardness, Young's modulus, and fracture strength of the tiles were measured; all decreased with increasing nanotube content. Microscopic examination revealed that the nanotubes were present in the tiles as micron-sized-and-larger agglomerates. It is concluded that the degree of dispersion of the nanotubes achieved by dry ball-milling was not sufficient to achieve mixing and bonding between the nanotubes and the boron carbide particles.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2004.08.008