TY  - JOUR
AU  - Nonemacher, Juliane Franciele
AU  - Arinicheva, Yulia
AU  - Yan, Gang
AU  - Finsterbusch, Martin
AU  - Krüger, Manja
AU  - Malzbender, Jürgen
TI  - Fracture toughness of single grains and polycrystalline Li7La3Zr2O12 electrolyte material based on a pillar splitting method
JO  - Journal of the European Ceramic Society
VL  - 40
IS  - 8
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2020-01935
SP  - 3057 - 3064
PY  - 2020
AB  - In the present study an advanced pillar splitting method is used to determine the fracture toughness of a garnet-type Li7La3Zr2O12 (LLZO) electrolyte. The obtained results are compared to data derived on the basis of conventional Vickers indentation. Furthermore, potential micro-pillar size effects are investigated. The estimated fracture toughness values for single grains and polycrystalline LLZO material obtained via both methods are in good agreement, yielding ∼ 1 MPa m0.5, hence the data indicate that LLZO exhibits relatively low fracture toughness and has a brittle behavior.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000523629100038
DO  - DOI:10.1016/j.jeurceramsoc.2020.03.028
UR  - https://juser.fz-juelich.de/record/875304
ER  -