TY - JOUR
T1 - Al2O3-3YTZP-Graphene multilayers produced by tape casting and spark plasma sintering
AU - Rincón, Acacio
AU - Moreno, Rodrigo
AU - Chinelatto, Adriana S.A.
AU - Gutierrez, Carlos F.
AU - Rayón, Emilio
AU - Salvador, María Dolores
AU - Borrell, Amparo
PY - 2014/9
Y1 - 2014/9
N2 - This work aims to establish a colloidal route to obtain laminates of alumina-zirconia combining layers with and without graphene. Green tapes of alumina, alumina with 5. vol.% of 3Y-TZP and alumina with 5. vol.% of 3Y-TZP and graphene-oxide (2 vol.%) were obtained by aqueous tape casting. It is possible to design materials for different structural applications with a controlled microstructure with a high number of different layers. The tapes were punched into 20-mm discs, joined to form laminates alternating up to 18-layers, and sintered in one-step by spark plasma sintering (SPS) at 1400 °C. It has demonstrated that there is a significant graphite diffusion provoked by the required graphite holders into the SPS-furnace. Dense laminates with layer thicknesses ~100 μm and good cohesion between layers were obtained. Nanoindentation results showed that hardness and elastic modulus values were higher than 27. GPa and 300. GPa, respectively, and similar for all layers.
AB - This work aims to establish a colloidal route to obtain laminates of alumina-zirconia combining layers with and without graphene. Green tapes of alumina, alumina with 5. vol.% of 3Y-TZP and alumina with 5. vol.% of 3Y-TZP and graphene-oxide (2 vol.%) were obtained by aqueous tape casting. It is possible to design materials for different structural applications with a controlled microstructure with a high number of different layers. The tapes were punched into 20-mm discs, joined to form laminates alternating up to 18-layers, and sintered in one-step by spark plasma sintering (SPS) at 1400 °C. It has demonstrated that there is a significant graphite diffusion provoked by the required graphite holders into the SPS-furnace. Dense laminates with layer thicknesses ~100 μm and good cohesion between layers were obtained. Nanoindentation results showed that hardness and elastic modulus values were higher than 27. GPa and 300. GPa, respectively, and similar for all layers.
KW - Graphene
KW - Mechanical properties
KW - Multilayers
KW - Spark plasma sintering
KW - Tape casting
UR - https://www.scopus.com/pages/publications/84899061802
U2 - 10.1016/j.jeurceramsoc.2014.02.011
DO - 10.1016/j.jeurceramsoc.2014.02.011
M3 - Article
AN - SCOPUS:84899061802
SN - 0955-2219
VL - 34
SP - 2427
EP - 2434
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 10
ER -