%0 Journal Article
%A Nonemacher, Juliane Franciele
%A Arinicheva, Yulia
%A Yan, Gang
%A Finsterbusch, Martin
%A Krüger, Manja
%A Malzbender, Jürgen
%T Fracture toughness of single grains and polycrystalline Li7La3Zr2O12 electrolyte material based on a pillar splitting method
%J Journal of the European Ceramic Society
%V 40
%N 8
%@ 0955-2219
%C Amsterdam [u.a.]
%I Elsevier Science
%M FZJ-2020-01935
%P 3057 - 3064
%D 2020
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000523629100038
%R 10.1016/j.jeurceramsoc.2020.03.028
%U https://juser.fz-juelich.de/record/875304