%0 Journal Article
%A Bartolomé, J. F.
%A Beltrán Fínez, Juan Ignacio
%A Gutiérrez-González, C. F.
%A Pecharromán, C.
%A Muñoz, M. C.
%A Moya, J. S.
%T Influence of ceramic-metal interface adhesion on crack growth resistance of ZrO2-Nb ceramic matrix composites
%D 2008
%@ 1359-6454
%U https://hdl.handle.net/20.500.14352/93245
%X Yttria-stabilized zirconia strengthened with lamellar flaky-shape Nb metal particles was obtained by hot-pressing at 1500 °C for 1 h. The ZrO2–Nb interface has been studied by atomistic, first-principles calculations and by high-resolution transmission electron microscopy. The influence of the ceramic–metal interface on the crack growth resistance has been investigated. Crack growth is shown to occur with a rising resistance, governed by intact metal ligaments in the crack wake. Crack extension occurs by a combination of plastic deformation on the metal particles and interface debonding. The connection between the interface adhesion and this microstructural toughening mechanism has been evaluated.
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