Mechanical properties of Fe-based composites reinforced with multi-walled carbon nanotubes

J. Y. Suh, D. H. Bae

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Reinforcing efficiency of multi-walled carbon nanotubes (MWCNTs) has been investigated for Fe-based composites by powder metallurgy routes. For the mechanically milled Fe powder containing dispersed MWCNTs, first, the composite are produced by hot-pressing at 570°C for 2h under 140MPa, in which MWCNTs provide a high reinforcement factor of 0.6 and a yield stress of 2.2GPa at the 4vol% MWCNTs. On the other hand, for the composites produced by compaction and then sintering at 850°C, the dispersed MWCNTs decompose to be a Fe-C interstitial alloyed phase, in which the composite shows a relatively low yield stress of 450MPa at the 8.3vol% Fe-C phase. For the composite sintered at high temperature of 1150°C, the reinforcement factor is found to be 0.2 and a yield stress of 280MPa at the 9.2vol% Fe3C. These results demonstrate that MWCNTs with a high aspect ratio and a strong bonding character with the matrix have a great role in reinforcing the Fe-based composites.

Original languageEnglish
Pages (from-to)321-325
Number of pages5
JournalMaterials Science and Engineering A
Volume582
DOIs
Publication statusPublished - 2013 Oct 1

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Carbon Nanotubes
Carbon nanotubes
carbon nanotubes
mechanical properties
Mechanical properties
composite materials
Composite materials
Yield stress
reinforcement
Reinforcement
powder metallurgy
hot pressing
Powder metallurgy
Hot pressing
high aspect ratio
Powders
Aspect ratio
sintering
interstitials
Compaction

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "Reinforcing efficiency of multi-walled carbon nanotubes (MWCNTs) has been investigated for Fe-based composites by powder metallurgy routes. For the mechanically milled Fe powder containing dispersed MWCNTs, first, the composite are produced by hot-pressing at 570°C for 2h under 140MPa, in which MWCNTs provide a high reinforcement factor of 0.6 and a yield stress of 2.2GPa at the 4vol{\%} MWCNTs. On the other hand, for the composites produced by compaction and then sintering at 850°C, the dispersed MWCNTs decompose to be a Fe-C interstitial alloyed phase, in which the composite shows a relatively low yield stress of 450MPa at the 8.3vol{\%} Fe-C phase. For the composite sintered at high temperature of 1150°C, the reinforcement factor is found to be 0.2 and a yield stress of 280MPa at the 9.2vol{\%} Fe3C. These results demonstrate that MWCNTs with a high aspect ratio and a strong bonding character with the matrix have a great role in reinforcing the Fe-based composites.",
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Mechanical properties of Fe-based composites reinforced with multi-walled carbon nanotubes. / Suh, J. Y.; Bae, D. H.

In: Materials Science and Engineering A, Vol. 582, 01.10.2013, p. 321-325.

Research output: Contribution to journalArticle

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