Dramatic effect of multiwalled carbon nanotubes on the electrical properties of alumina based ceramic nanocomposites

Ahmad, Kamsuriah; Pan, Wei

doi:10.1016/j.compscitech.2009.01.015

Cited by 69 publications

(29 citation statements)

References 33 publications

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“…4 Morphology of the sample before and after non-isothermal oxidation at 1200°C. matrix results in the dramatic increase of around eight orders of magnitude in the conductivity due to the percolation threshold in the well-dispersed MWNTs / alumina composites containing 0.45 mass% of MWNTs [3]. In this study, the AT12C2 sample containing 2 vol.%-CNT, which is about 1 mass%-CNT, is in a transition state of the electric conductivity.…”

Section: Resultsmentioning

confidence: 93%

“…Carbon nanotubes (CNTs) possess high mechanical properties, good electric conductivity and high aspect ratio. It is known that CNT/Al 2 O 3 composites with a small amount of CNTs exhibit high mechanical properties [2] and good electric conductivity [3]. In this study, to fabricate CNT/ Al 2 O 3 -TiC composites with high mechanical properties, electric conductivity and excellent oxidation resistance, influence of CNT content on these properties of the composites was investigated.…”

Section: Introductionmentioning

confidence: 99%

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Effects of CNT Addition on Mechanical Properties, Electric Conductivity and Oxidation Resistance of Al2O3-TiC Composite

Sano

Morisaki

Zheng

et al. 2013

MSF

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Abstract. Effects of carbon nanotubes (CNT) addition on mechanical properties, electric conductivity and oxidation resistance of CNT/Al 2 O 3 -TiC composite were investigated. It was found that flexural strength, Young's modulus and fracture toughness of the composites were improved by addition of more than 2 vol%-CNT. In the composites with more than 3 vol%-CNT, the oxidation resistance of the composite was degraded. In comparison with Al 2 O 3 -26vol%TiC sample as TiC particle-percolated sample, the Al 2 O 3 -12vol%TiC-3vol%CNT sample, which is not TiC particle-percolated sample, shows almost the same mechanical properties and electric conductivity, and also shows thinner oxidized region after oxidation at 1200°C due to less TiC in the composite.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effects of CNT Addition on Mechanical Properties, Electric Conductivity and Oxidation Resistance of Al2O3-TiC Composite

Sano

Morisaki

Zheng

et al. 2013

MSF

View full text Add to dashboard Cite

show abstract

“…Our T 0 and T 1 were close to those for SWCNT composites 8 and MWCNT composites. 14,16,20 As mentioned before, the tunnel width w and barrier height V 0 can be estimated from T 0 and T 1 . Kim et al 11 and Mdarhri et al 19 used approximate expressions for T 0 and T 1 .…”

Section: Resultsmentioning

confidence: 99%

“…␣ = 0.01 and K = 1. The T 0 and T 1 reported in the literature [14][15][16][17]20 also are plotted in Fig. 8.…”

Section: ] [14]mentioning

confidence: 99%

“…8 On the other hand, the FIT model matches the electrical conductivities of multiwalled ͑MW͒ CNT composites. [14][15][16][17][18][19][20] The electrical conduction through the CNT-CNT junctions dominates the conductivity of CNT network in the FIT model. The tunnel width w and barrier height V 0 can be estimated from two specific temperatures T 0 and T 1 obtained by fitting the FIT law to the measured temperature dependence of the conductivity.…”

Section: Introductionmentioning

confidence: 99%

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