This title appears in the Scientific Report :
2019
Please use the identifier:
http://dx.doi.org/10.1016/j.ceramint.2019.07.114 in citations.
Please use the identifier: http://hdl.handle.net/2128/23388 in citations.
Micromechanical Assessment of Al/Y-substituted NASICON Solid Electrolytes
Micromechanical Assessment of Al/Y-substituted NASICON Solid Electrolytes
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 thei...
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Personal Name(s): | Nonemacher, Juliane Franciele |
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Naqash, Sahir / Tietz, Frank / Malzbender, Jürgen (Corresponding author) | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Ceramics international, 45 (2019) 17A, S. 21308 - 21314 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2019
|
DOI: |
10.1016/j.ceramint.2019.07.114 |
Document Type: |
Journal Article |
Research Program: |
Methods and Concepts for Material Development |
Link: |
Published on 2019-07-09. Available in OpenAccess from 2021-07-09. Published on 2019-07-09. Available in OpenAccess from 2021-07-09. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/23388 in citations.
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. |