Journal Article

FZJ-2019-05193

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Micromechanical Assessment of Al/Y-substituted NASICON Solid Electrolytes

Nonemacher, J. F. ; Naqash, S.FZJ* ; Tietz, F.FZJ* ; Malzbender, J. (Corresponding author)FZJ*

2019
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/23388  doi:10.1016/j.ceramint.2019.07.114

Abstract: Al/Y-substituted NASICON solid electrolytes are promising for novel solid state batteries. The solid solutions Na1+2xAlxYxZr2-2x(PO4)3 (NAYZPx) and Na3+2xAlxYxZr2-2x(SiO4)2(PO4) (NAYZSiPx) that crystallize in this structure are characterized by depth-sensitive indentation technique to determine their micro-mechanical properties. NAYZPx is rhombohedral, whereas NAYZSiPx changes from monoclinic to rhombohedral phase depending on substitutional level and temperature. For rhombohedral NAYZPx elastic moduli are in the range ~72–82 GPa and hardness values are in the range ~4.8–5.8 GPa, whereas for NAYZSiPx the elastic moduli are with the range ~72–88 GPa and hardness ~5.6–7.6 GPa, respectively. The fracture toughness values for both systems, as determined by Vickers indentation, are rather independent of the applied load being with the range 1.30–1.58 MPa m0.5. Cracks typically show a mixed intergranular/transgranular crack mode.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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