Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

Erica L. Corral; Hsin Wang; Javier Garay; Zuhair Munir; Enrique V. Barrera

doi:10.1016/j.jeurceramsoc.2010.10.020

Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

Erica L. Corral, Hsin Wang, Javier Garay, Zuhair Munir, Enrique V. Barrera

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

58 Scopus citations

Abstract

Si₃N₄ nanocomposites reinforced with 1-, 2-, and 6-vol% single-walled carbon nanotubes (SWNTs) were processed using spark plasma sintering (SPS) in order to control the thermal and electrical properties of the ceramic. Only 2-vol% SWNTs additions were used to decrease the room temperature thermal conductivity by 62% over the monolith and 6-vol% SWNTs was used to transform the insulating ceramic into a metallic electrical conductor (92Sm^-1). We found that densification of the nanocomposites was inhibited with increasing SWNT concentration however, the phase transformation from α- to β-Si₃N₄ was not. After SPS, we found evidence of SWNT survival in addition to sintering induced defects detected by monitoring SWNT peak intensity ratios using Raman spectroscopy. Our results show that SWNTs can be used to effectively increase electrical conductivity and lower thermal conductivity of Si₃N₄ due to electrical transport enhancement and thermal scattering of phonons by SWNTs using SPS.

Original language	English (US)
Pages (from-to)	391-400
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	31
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2010.10.020
State	Published - Mar 2011

Keywords

Composites
Electrical properties
High-temperature materials
Single-wall carbon nanotubes
Thermal properties

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/j.jeurceramsoc.2010.10.020

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title = "Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering",

abstract = "Si3N4 nanocomposites reinforced with 1-, 2-, and 6-vol% single-walled carbon nanotubes (SWNTs) were processed using spark plasma sintering (SPS) in order to control the thermal and electrical properties of the ceramic. Only 2-vol% SWNTs additions were used to decrease the room temperature thermal conductivity by 62% over the monolith and 6-vol% SWNTs was used to transform the insulating ceramic into a metallic electrical conductor (92Sm-1). We found that densification of the nanocomposites was inhibited with increasing SWNT concentration however, the phase transformation from α- to β-Si3N4 was not. After SPS, we found evidence of SWNT survival in addition to sintering induced defects detected by monitoring SWNT peak intensity ratios using Raman spectroscopy. Our results show that SWNTs can be used to effectively increase electrical conductivity and lower thermal conductivity of Si3N4 due to electrical transport enhancement and thermal scattering of phonons by SWNTs using SPS.",

keywords = "Composites, Electrical properties, High-temperature materials, Single-wall carbon nanotubes, Thermal properties",

author = "Corral, {Erica L.} and Hsin Wang and Javier Garay and Zuhair Munir and Barrera, {Enrique V.}",

note = "Funding Information: This work has been financially supported by The Robert Welch Foundation of Texas grant number C1494 , the NSF-AGEP at Rice University grant number HRD-9817555 , Carbon Nanotechnologies Inc., NASA-URETI grant number NC-01-0203 and NASA Ames Research Center grant number NNA04CK63A . Research at The High Temperature Materials Laboratory (HTML) was sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the HTML User Program, Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy under contract number DE-AC05-00OR22725.",

year = "2011",

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doi = "10.1016/j.jeurceramsoc.2010.10.020",

language = "English (US)",

volume = "31",

pages = "391--400",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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TY - JOUR

T1 - Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

AU - Corral, Erica L.

AU - Wang, Hsin

AU - Garay, Javier

AU - Munir, Zuhair

AU - Barrera, Enrique V.

N1 - Funding Information: This work has been financially supported by The Robert Welch Foundation of Texas grant number C1494 , the NSF-AGEP at Rice University grant number HRD-9817555 , Carbon Nanotechnologies Inc., NASA-URETI grant number NC-01-0203 and NASA Ames Research Center grant number NNA04CK63A . Research at The High Temperature Materials Laboratory (HTML) was sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the HTML User Program, Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy under contract number DE-AC05-00OR22725.

PY - 2011/3

Y1 - 2011/3

N2 - Si3N4 nanocomposites reinforced with 1-, 2-, and 6-vol% single-walled carbon nanotubes (SWNTs) were processed using spark plasma sintering (SPS) in order to control the thermal and electrical properties of the ceramic. Only 2-vol% SWNTs additions were used to decrease the room temperature thermal conductivity by 62% over the monolith and 6-vol% SWNTs was used to transform the insulating ceramic into a metallic electrical conductor (92Sm-1). We found that densification of the nanocomposites was inhibited with increasing SWNT concentration however, the phase transformation from α- to β-Si3N4 was not. After SPS, we found evidence of SWNT survival in addition to sintering induced defects detected by monitoring SWNT peak intensity ratios using Raman spectroscopy. Our results show that SWNTs can be used to effectively increase electrical conductivity and lower thermal conductivity of Si3N4 due to electrical transport enhancement and thermal scattering of phonons by SWNTs using SPS.

AB - Si3N4 nanocomposites reinforced with 1-, 2-, and 6-vol% single-walled carbon nanotubes (SWNTs) were processed using spark plasma sintering (SPS) in order to control the thermal and electrical properties of the ceramic. Only 2-vol% SWNTs additions were used to decrease the room temperature thermal conductivity by 62% over the monolith and 6-vol% SWNTs was used to transform the insulating ceramic into a metallic electrical conductor (92Sm-1). We found that densification of the nanocomposites was inhibited with increasing SWNT concentration however, the phase transformation from α- to β-Si3N4 was not. After SPS, we found evidence of SWNT survival in addition to sintering induced defects detected by monitoring SWNT peak intensity ratios using Raman spectroscopy. Our results show that SWNTs can be used to effectively increase electrical conductivity and lower thermal conductivity of Si3N4 due to electrical transport enhancement and thermal scattering of phonons by SWNTs using SPS.

KW - Composites

KW - Electrical properties

KW - High-temperature materials

KW - Single-wall carbon nanotubes

KW - Thermal properties

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Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

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