TY - JOUR
T1 - Colloidal processing of fully stabilized zirconia laminates comprising graphene oxide-enriched layers
AU - Rincón, Acacio
AU - Moreno, Rodrigo
AU - Gutiérrez-González, Carlos Fidel
AU - Sainz, Raquel
AU - Salvador, María Dolores
AU - Borrell, Amparo
N1 - Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Multilayer materials have demonstrated to provide an efficient mechanism for toughening by deflection of a propagating crack by weak interlayers. Therefore, the aim of this work is to study the colloidal processing of 8 mol% yttria stabilized zirconia (8YSZ) based laminates by intercalating thin layers of graphene enriched with 8YSZ, and to evaluate the advantages of such multilayered structure in the propagation of cracks induced by indentation. Green tapes of 8YSZ and graphene-oxide with YSZ were obtained by aqueous tape casting and sintered in one-step by spark plasma sintering at 1400 °C. Microindentation results showed that the indentation cracks propagate within the horizontal direction within the ceramic layer, but in the cross-sectional direction the presence of the GO-rich layers stops the cracks without deflection or bifurcation. The hardness and elastic modulus values were higher than 17.6 GPa and 230 GPa, respectively, and similar for all layers.
AB - Multilayer materials have demonstrated to provide an efficient mechanism for toughening by deflection of a propagating crack by weak interlayers. Therefore, the aim of this work is to study the colloidal processing of 8 mol% yttria stabilized zirconia (8YSZ) based laminates by intercalating thin layers of graphene enriched with 8YSZ, and to evaluate the advantages of such multilayered structure in the propagation of cracks induced by indentation. Green tapes of 8YSZ and graphene-oxide with YSZ were obtained by aqueous tape casting and sintered in one-step by spark plasma sintering at 1400 °C. Microindentation results showed that the indentation cracks propagate within the horizontal direction within the ceramic layer, but in the cross-sectional direction the presence of the GO-rich layers stops the cracks without deflection or bifurcation. The hardness and elastic modulus values were higher than 17.6 GPa and 230 GPa, respectively, and similar for all layers.
KW - 8YSZ
KW - Colloidal processing
KW - Functional properties
KW - Graphene
KW - Spark plasma sintering
UR - https://www.scopus.com/pages/publications/84956697402
U2 - 10.1016/j.jeurceramsoc.2016.01.035
DO - 10.1016/j.jeurceramsoc.2016.01.035
M3 - Article
AN - SCOPUS:84956697402
SN - 0955-2219
VL - 36
SP - 1797
EP - 1804
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 7
ER -