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Título

Comparative study on high temperature mechanical behavior in 3YTZP containing SWCNTs or MWCNTs

AutorCastillo-Rodríguez, Miguel; Muñoz, Antonio; Domínguez-Rodríguez, Arturo
Palabras claveMechanical properties
Creep
Nanotubes
Zirconia
Composites
Fecha de publicación2016
EditorElsevier
CitaciónJournal of the European Ceramic Society 36: 2573- 2578 (2016)
ResumenEffects on mechanical properties of the presence of either single-walled carbon nanotubes (SWCNTs) or multi-walled carbon nanotubes (MWCNTs) in a 3YTZP matrix have been investigated in this work. Thus, monolithic 3YTZP and 3YTZP containing 2.5 vol% either SWCNTs or MWCNTs were fabricated by Spark Plasma Sintering (SPS) at 1250 °C. Samples were crept at temperatures between 1100 and 1200 °C and stresses between 5 and 230 MPa. Raman spectroscopy measurements indicate the absence of severe damages in the CNTs structure after sintering and testing. Scanning electron microscopy studies show that microstructures do not evolve during creep tests. Mechanical results point out that monolithic 3YTZP exhibits a higher creep resistance than composites since CNTs facilitate grain boundary sliding during high-temperature deformation. SWCNTs and MWCNTs have a similar effect on the high temperature mechanical behavior in 3YTZP where the bundle length and the level of dispersion of CNTs play a crucial role.
URIhttp://hdl.handle.net/10261/147679
DOI10.1016/j.jeurceramsoc.2016.03.025
Identificadoresdoi: 10.1016/j.jeurceramsoc.2016.03.025
issn: 1873-619X
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