Mechanical and electrical properties of carbon nanofiber dispersed Ti composite formed by compression shearing method at room temperature

N. Nakayama, M. Horita, H. Miki, T. Takagi, H. Takeishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The materials used for fuel cell separators require a bending strength of more than 70 MPa. Therefore, the contact resistance is required to be 10 mΩ·cm2, respectively. In the present study, vapor grown carbon nanofibers (VGCF) were added to Ti composite using the compression shearing method at room temperature. The mechanical properties of the compacted powder were then measured. The microstructure of the Ti/VGCF composite material was Ti with dispersed VGCF (not alloyed). In addition, the bending strength of all Ti/VGCF composites was more than 800 MPa, and the bending strength of 0-1 vol% VGCF composites was twice as much as that for Ti rolled material (ASTM grade 2). Ti/VGCF thin plates also exhibited excellent electrical property. The contact resistance of 5 vol% VGCF was found to be three times smaller than that of Ti rolled material. These properties make the Ti/VGCF composite material suitable as a separator material.

Original languageEnglish
Title of host publicationTHERMEC 2013
EditorsB. Mishra, Mihail. Ionescu, T. Chandra
PublisherTrans Tech Publications Ltd
Pages2485-2490
Number of pages6
ISBN (Print)9783038350736
DOIs
Publication statusPublished - 2014
Event8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013 - Las Vegas, NV, United States
Duration: 2013 Dec 22013 Dec 6

Publication series

NameMaterials Science Forum
Volume783-786
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013
CountryUnited States
CityLas Vegas, NV
Period13/12/213/12/6

Keywords

  • Bending test
  • Carbon nanofiber
  • Composite material
  • Hardness
  • Mechanical properties
  • Powder metallurgy
  • Severe plastic deformation
  • Titanium

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Nakayama, N., Horita, M., Miki, H., Takagi, T., & Takeishi, H. (2014). Mechanical and electrical properties of carbon nanofiber dispersed Ti composite formed by compression shearing method at room temperature. In B. Mishra, M. Ionescu, & T. Chandra (Eds.), THERMEC 2013 (pp. 2485-2490). (Materials Science Forum; Vol. 783-786). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/msf.783-786.2485