Carbon Nanotube Reinforced Metal Matrix Nanocomposites via Equal Channel Angular Pressing

Quang Pham; Young Gi Jeong; Seung Chae Yoon; Sun Ig Hong; Soon Hyung Hong; Hyoung Seop Kim

doi:10.4028/www.scientific.net/MSF.534-536.245

Paper Titles

The Magnetic and Photo-Catalytic Properties of Fe Doped TiO₂ Nanocrystalline Powder Synthesized by Mechanical Alloying
p.229

Thermal Stability of Amorphous Ti- Cu- Ni- Sn Prepared by Mechanical Alloying
p.233

Analysis of Failure Mechanisms during Powder Compaction
p.237

Anisotropy of Thermal Expansion Coefficient of Pressed Graphite Foam Measured over the Temperature Interval 20-500°C
p.241

Carbon Nanotube Reinforced Metal Matrix Nanocomposites via Equal Channel Angular Pressing
p.245

Compaction of Ultra-Fine WC Powder by High-Speed Centrifugal Compaction Process
p.249

Densification and Conolidation of Powders by Equal Channel Angular Pressing
p.253

Densification Behavior of Iron Powder during Cold Stepped Compaction
p.257

Densification Mechanism of Warm Compaction for Iron-Based Powder Materials
p.261

HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Carbon Nanotube Reinforced Metal Matrix...

Carbon Nanotube Reinforced Metal Matrix Nanocomposites via Equal Channel Angular Pressing

Abstract:

Carbon nanotubes (CNTs) have been the subject of intensive study for applications in the fields of nanotechnologies in recent years due to their superior mechanical, electric, optical and electronic properties. Because of their exceptionally small diameters (≈ several nm) as well as their high Young’s modulus (≈ 1 TPa), tensile strength (≈ 200 GPa) and high elongation (10-30%) in addition to a high chemical stability, CNTs are attractive reinforcement materials for light weight and high strength metal matrix composites. In this study, bottom-up type powder processing and top-down type SPD (severe plastic deformation) approaches were combined in order to achieve full density of CNT/metal matrix composites with superior mechanical properties by improved particle bonding and least grain growth, which were considered as a bottle neck of the bottom-up method using the conventional powder metallurgy of compaction and sintering. ECAP (equal channel angular pressing), the most promising method in SPD, was used for the CNT/Cu powder consolidation. The powder ECAP processing with 1, 2, 4 and 8 route C passes was conducted at room temperature. It was found by mechanical testing of the consolidated CNT/Cu that high mechanical strength could be achieved effectively as a result of the Cu matrix strengthening and improved particle bonding during ECAP. The ECAP processing of powders is a viable method to achieve fully density CNT-Cu nanocomposites.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

245-248

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.245

Citation:

Cite this paper

Online since:

January 2007

Authors:

Quang Pham, Young Gi Jeong, Seung Chae Yoon, Sun Ig Hong, Soon Hyung Hong, Hyoung Seop Kim

Keywords:

Carbon Nanotube (CN), Densification, Equal-Channel Angular Pressing (ECAP), Mechanical Property, Metal Matrix Nanocomposite , Plastic Deformation Homogenity

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Kroto, H. W., Heath, J. R., O'Brien, S. C., Curl, R. F. & Smalley, R. E. (1985) C60: Buckminsterfullerene. Nature 318, p.162.

DOI: 10.1038/318162a0

Google Scholar

[2] Iijima, S. (1991) Helical Microtubules of Graphitic Carbon. Nature 354, pp.56-57.

Google Scholar

[3] Popov, V. N. (2004) Carbon Nanotubes: Properties and Application. Mater. Sci. Eng. R43, pp.61-102.

Google Scholar

[4] Lau, K-T., Chipara, M., Ling, H-Y. & Hui, D. (2004) On the Effective Elastic Moduli of Carbon Nanotubes for Nanocomposite Structures. Composites B35. pp.95-101.

DOI: 10.1016/j.compositesb.2003.08.008

Google Scholar

[5] Gil Sevillano, S. J., Van Houtte P. & Aernoudt, E. (1980) Large Strain Work Hardening and Textures. Prog. Mater. Sci. 25, pp.69-412.

DOI: 10.1016/0079-6425(80)90001-8

Google Scholar

[6] Segal, V. M. (1995) Materials Processing by Simple Shear. Mater. Sci. Eng. A197, pp.157-164.

Google Scholar

[7] Valiev, R. Z. (2001) Developing SPD Methods for Processing Bulk Nanostructured Materials with Enhanced Properties. Met. Mater. Int. 7, pp.413-420.

DOI: 10.1007/bf03027081

Google Scholar

[8] Alexandrov, I. (2001) Microstructural Characterization of SPD Processed Materials. Met. Mater. Int. 7, pp.565-571.

DOI: 10.1007/bf03179255

Google Scholar

[9] Furukawa, M., Horita, Z. & Langdon, T. G. (2003) Factors Influencing Microstructural Development in Equal-Channel Angular Pressing. Met. Mater. Int. 9, pp.141-149. `.

DOI: 10.1007/bf03027270

Google Scholar