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

J. Y. Suh; D. H. Bae

doi:10.1016/j.msea.2013.06.057

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

J. Y. Suh, D. H. Bae

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 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 language	English
Pages (from-to)	321-325
Number of pages	5
Journal	Materials Science and Engineering A
Volume	582
DOIs	https://doi.org/10.1016/j.msea.2013.06.057
Publication status	Published - 2013 Oct

Bibliographical note

Funding Information:
This research was supported by National Research Foundation of Korea (No. 2012R1A1A2042329 ).

All Science Journal Classification (ASJC) codes

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

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title = "Mechanical properties of Fe-based composites reinforced with multi-walled carbon nanotubes",

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.",

author = "Suh, {J. Y.} and Bae, {D. H.}",

note = "Funding Information: This research was supported by National Research Foundation of Korea (No. 2012R1A1A2042329 ).",

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doi = "10.1016/j.msea.2013.06.057",

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AU - Bae, D. H.

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PY - 2013/10

Y1 - 2013/10

N2 - 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.

AB - 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

Abstract

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