Journal ArticleDOI
Carbon nanotube toughened aluminium oxide nanocomposite
TLDR
In this article, the authors describe the mechanical properties of carbon nanotube-reinforced Al2O3 nanocomposites fabricated by hot-pressing and show that the fracture toughness, hardness and flexural strength of the nanocomposition were improved by 94%, 13% and 6.4% respectively, at 4-vol.% CNT additions.Abstract:
This paper describes the mechanical properties of carbon nanotube-reinforced Al2O3 nanocomposites fabricated by hot-pressing. The results showed that compared with monolithic Al2O3 the fracture toughness, hardness and flexural strength of the nanocomposites were improved by 94%, 13% and 6.4% respectively, at 4 vol.% CNT additions. For 10 vol.% CNT additions, with the exception of the fracture toughness, which was improved by 66%, a decrease in mechanical properties was observed when compared with those for monolithic Al2O3. The toughening mechanism is discussed, which is due to the uniform dispersion of CNTs within the matrix, adequate densification, and proper CNT/matrix interfacial connections.read more
Citations
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Mechanical properties of graphene platelet-reinforced alumina ceramic composites
Jian Liu,Haixue Yan,Kyle Jiang +2 more
TL;DR: In this paper, the effects of GPLs on the microstructure and mechanical properties of the Al 2 O 3 based ceramic composites were investigated, and the results show that GPLs are well dispersed in the ceramic matrix.
Journal ArticleDOI
Toughening of zirconia/alumina composites by the addition of graphene platelets
TL;DR: In this paper, a study on graphene platelet/zirconia-toughened alumina (GPL/ZTA) composites was carried out to evaluate the potential of the new structural materials.
Journal ArticleDOI
Carbon nanotube–metal oxide nanocomposites: Fabrication, properties and applications
Shadpour Mallakpour,Elham Khadem +1 more
TL;DR: In this article, a review summarizes the recent advances on the principle and techniques of preparation, functionalization of the carbon nanotubes (CNTs), and discusses the effects of combination of CNT with metal oxides such as aluminum dioxide, titanium dioxide, zinc oxide, iron oxide and etc.
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Multi-walled carbon nanotubes reinforced Al2O3 nanocomposites: Mechanical properties and interfacial investigations
TL;DR: In this paper, a well-dispersed multi-walled carbon nanotubes (CNTs) reinforced Al2O3 nanocomposites were successfully fabricated by hot-pressing.
Journal ArticleDOI
Determination of structural and mechanical properties of multilayer graphene added silicon nitride-based composites
TL;DR: In this paper, the microstructure and mechanical properties of the graphene reinforced silicon nitride based composite materials have been investigated, and it has been shown that graphene platelets are inducing porosity in matrix.
References
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Journal ArticleDOI
Advances in the science and technology of carbon nanotubes and their composites: a review
TL;DR: A review of recent advances in carbon nanotubes and their composites can be found in this article, where the authors examine the research work reported in the literature on the structure and processing of carbon Nanotubes.
Journal ArticleDOI
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements
TL;DR: In this paper, the application of indentation techniques to the evaluation of fracture toughness is examined critically, in two parts: the first part is focused on an approach which involves direct measurement of Vickers-produced radial cracks as a function of the indentation load.
A Critical evaluation of indentation techniques for measuring fracture toughness
TL;DR: In this paper, the application of indentation techniques to the evaluation of fracture toughness is examined critically, in two parts: the first part is focused on an approach which involves direct measurement of Vickers-produced radial cracks as a function of the indentation load.
Journal ArticleDOI
A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: II, Strength Method
TL;DR: In this paper, the sharp-indentation technique of strength-test precracking for toughness evaluation is examined and the residual-stress term discussed in Part I of this study is now introduced explicitly into the strength formulation.