The effect of carbon nanotubes on the sintering behaviour of zirconia

Milsom, Ben; Viola, Giuseppe; Gao, Zhipeng; Inam, Fawad; Peijs, Ton; Reece, Michael J.

doi:10.1016/j.jeurceramsoc.2012.07.028

Cited by 40 publications

(19 citation statements)

References 38 publications

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“…Incorporation of CNTs in a carbon matrix resulted in a signicant change in mechanical, electrical and thermal properties of carbon matrices. [16][17][18][19][20] Various factors that inuence property modication, are processing techniques, type of CNTs, aspect ratio and CNTs content. However, the nature of interactions between pitch components and carbon nano material during carbonizations has not been claried.…”

Section: -14mentioning

confidence: 99%

Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes

Arani

Collins

et al. 2017

RSC Adv.

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In this study, the influence of the addition of carbon nanotubes (CNTs) and carbon black (CB) on the graphitization temperature and microstructure of coal tar pitch (CTP) are investigated. X-ray diffraction patterns of carbon residues indicate that minimum interlayer spacing (d 002 ) values are obtained at 2000C for CTP/CNT. Moreover, the Raman spectrum of CTP/CNTs is similar to graphite, and the relative intensity of Raman lines shows that CTP/CB is less graphitized at 2000 C. In addition, scanning electron microscopy images show that when CB is added sample textures tend to disordered morphologies. However, CNTs, not only improve the morphology of CTP, but also act as nuclei for the growth of graphite flaky crystallites. The role of the CTP/CNT interface and the defects of CNTs on the graphitization degree are studied using transmission electron microscopy, and a mechanism for the graphitization of CTP, in the presence of CNTs, is proposed.

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Section: -14mentioning

confidence: 99%

Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes

Arani

Collins

et al. 2017

RSC Adv.

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“…[84][85][86][87] The dispersion state of CNTs and interfacial interactions are most important parameters in CNTs-polymer nano-composites.…”

Section: -83mentioning

confidence: 99%

The degradation of mechanical properties in polymer nano-composites exposed to liquid media – a review

et al. 2016

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The advancement of polymer nano-composites has been motivated by the need for materials with a specific combination of mechanical properties beyond those achieved from only one material.Integration of reinforcement into polymers at the nanoscale can provide a significant increase in numerous physical and mechanical properties of polymer nano-composites. However, in applications where contact with liquid media is unavoidable, the mechanical properties of polymer nano-composites suffer degradation which is a commonly observed phenomenon. Non aggressive liquid such as water is capable of lowering the mechanical properties of polymer nano-composites by acting as plasticizers while moderate and severe aggressive liquid when combined with residual stresses can cause unexpected brittle failure known as ESC. To date, only a few studies are reported discussing the ability of nano-fillers to resist degradation of mechanical properties in polymer nano-composites when exposed to liquid media. In this review, various factors responsible for mechanical property degradation caused by liquid media in polymer nano-composites and their remedies are studied.

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“…In conjunction with semiconductors 13,14 and ceramics, [23][24][25] CNT influence the thermoelectric 23 and structural properties. [26][27][28][29][30] It was shown that CNT have a significant influence on the sintering and grain growth behavior of ceramics. 27,31,32 Low contents of CNT (<2 vol.%) enhances the densification process by a better initial packing, whereas the grain growth is inhibited by Zener pinning effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Nanotubes on Thermoelectric Properties in Zn0.98Al0.02O

Dreßler

Löhnert

González‐Julián

et al. 2015

Journal of Elec Materi

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Thermoelectric oxides can provide the advantage of high-temperature stability in oxygen-containing atmospheres. It is known that the incorporation of multiwalled carbon nanotubes (mw-CNT) can change the thermoelectric as well as the structural properties of oxides. Here, we report the influence of mw-CNT on the thermoelectric properties of Al-doped ZnO (AZO). The preparation of the mw-CNT-added AZO was done using an ultrasonic mixing of the starting materials followed by a spark plasma sintering process under vacuum. The Seebeck coefficient S, thermal conductivity k and electrical conductivity r were determined in the temperature range between 300 K and 900 K. It was observed that the thermal conductivity is significantly reduced by the incorporation of the mw-CNT. At the same time, the electrical conductivity is increased by a factor of 21 from 8700 S/m to 190,000 S/m. The Power factor PF ¼ S 2 r indicates that the addition of mw-CNT improves the thermoelectric properties of Al doped ZnO in comparison to the reference sample prepared with same process but without mw-CNT.

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The effect of carbon nanotubes on the sintering behaviour of zirconia

Cited by 40 publications

References 38 publications

Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes

Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes

The degradation of mechanical properties in polymer nano-composites exposed to liquid media – a review

Effect of Carbon Nanotubes on Thermoelectric Properties in Zn0.98Al0.02O

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