English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/219717
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Mechanical characterization of sol-gel alumina-based ceramics with intragranular reinforcement of multiwalled carbon nanotubes

AuthorsRivero-Antúnez, P.; Cano-Crespo, Rafael; Esquivias, L.; Rosa-Fox, Nicolás de la; Zamora-Ledesma, C.; Domínguez-Rodríguez, A.; Morales-Flórez, Víctor
Keywordsα-Al2O3
MWCNTs
Intragranular reinforcement
Fracture
Toughness
Crack bridging
Issue Date2020
PublisherPergamon Press Ltd,
CitationCeramics International 46: 19723- 19730 (2020)
AbstractMultiwalled carbon nanotubes (MWCNTs) have been widely considered for mechanical reinforcement of ceramic matrix composites. Nevertheless, the efficiency of this reinforcement strategy is under debate due to fabrication issues, such as a good homogenization or the location of the MWCNTs inside the matrix composite. Regarding this, the intragranular location of the MWCNTs has been deemed a crucial feature for optimizing the reinforcement compared to the typical intergranular placement achieved by conventional procedures. Recently, the sol-gel method has been reconsidered, as it promotes the intragranular placement of the MWCNTs. This work presents the mechanical characterization of these composites synthesized by the sol-gel method, where crack-bridging has been revealed as toughening mechanism. Finally, the conventional use of the bibliographical Young's modulus of pure alumina for the estimation of the fracture toughness is discussed, obtaining significant improvements of the fracture toughness when indentation measurements are treated by considering elastic moduli obtained by nanoindentation.
Publisher version (URL)http://dx.doi.org/10.1016/j.ceramint.2020.04.285
URIhttp://hdl.handle.net/10261/219717
Identifiersdoi: 10.1016/j.ceramint.2020.04.285
issn: 0272-8842
Appears in Collections:(ICMS) Artículos
Files in This Item:
File Description SizeFormat 
Manuscript_CerInter_REV_4.0_Clean_Version.pdf985,69 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.