SWCNTs versus MWCNTs as Reinforcement Agents in Zirconia‐and Alumina‐based Nanocomposites: Which One to Use

Bocanegra‐Bernal, M.H.; Domínguez-Ríos, Carlos; Garcia‐Reyes, A.; Aguilar-Elguézabal, A.; Echeberrı́a, J.

doi:10.1002/9781119242598.ch7

Advanced Ceramic Materials 2016

DOI: 10.1002/9781119242598.ch7

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SWCNTs versus MWCNTs as Reinforcement Agents in Zirconia‐and Alumina‐based Nanocomposites: Which One to Use

M.H. Bocanegra‐Bernal

Carlos Domínguez-Ríos

A. Garcia‐Reyes

et al.

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2018

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“…Scanning electron microscopy (SEM) micrographs of fracture surfaces of Al2O3 with additions of 0.1 wt% of four different kinds of MWCNTs. (a) MWCNT 1, outer diameter 50-80 nm, length 10-30 μm; (b) MWCNT 2, outer diameter 10-20 nm, length 10-30 μm; (c) MWCNT 3, outer diameter < 8 nm, length 10-30 μm; and (d) MWCNT CIMAV, outer diameter 10-70 nm, length 120-160 μm sintered by SPS at 1500°C 3 min.Figures (b)and (c) from the paper: SWCNTs versus MWCNTs as reinforcement agents in zirconia-and alumina-based nanocomposites: which one to use, Bocanegra-Bernal et al[24]. © 2016 Scrivener Publishing LLC.…”

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On the Performance of Carbon Nanotubes on Sintered Alumina-Zirconia Ceramics

Bocanegra‐Bernal¹,

Aguilar-Elguézabal²,

Reyes‐Rojas³

et al. 2018

Sintering Technology - Method and Application

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The alumina (Al 2 O 3) and zirconia (ZrO 2) ceramic monoliths and their combination are used in both technical and biomedical applications due to their combination of excellent chemical, physical, and mechanical properties. Pressureless sintering (PLS), reaction bonding (RB), hot pressing (HP), hot isostatic pressing (HIP), and spark plasma sintering (SPS) are the sintering methods more commonly used. The high brittleness, the low fracture toughness, and low thermal stability that possess these ceramics are its Achilles heel for numerous engineering applications. The incorporation of a second phase such as carbon nanotubes (CNTs) into the ceramic matrix has been attempted to overcome these drawbacks but the obtained results are still controversial considering that the homogeneous dispersion of CNTs and the interfacial bonding between two different ceramic materials remains as a difficult task leading to little or even no improvement in mechanical properties. Besides, the role of CNTs in the sintering of ceramic materials is not clear in the scientific literature taking into account parameters such as materials used and particularly inconsistencies in dispersion and mixing of the CNTs. We discuss how the CNTs can affect the sintering behavior and microstructural evolution of alumina and zirconia ceramics and the combination of them.

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mentioning

confidence: 99%

On the Performance of Carbon Nanotubes on Sintered Alumina-Zirconia Ceramics

Bocanegra‐Bernal¹,

Aguilar-Elguézabal²,

Reyes‐Rojas³

et al. 2018

Sintering Technology - Method and Application

View full text Add to dashboard Cite

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SWCNTs versus MWCNTs as Reinforcement Agents in Zirconia‐and Alumina‐based Nanocomposites: Which One to Use

Cited by 1 publication

References 111 publications

On the Performance of Carbon Nanotubes on Sintered Alumina-Zirconia Ceramics

On the Performance of Carbon Nanotubes on Sintered Alumina-Zirconia Ceramics

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