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Large mechanical pr...
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Chen, ZhuoErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria
(författare)
Large mechanical properties enhancement in ceramics through vacancy-mediated unit cell disturbance
- Artikel/kapitelEngelska2023
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Nature Publishing Group,2023
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LIBRIS-ID:oai:DiVA.org:liu-201116
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-201116URI
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https://doi.org/10.1038/s41467-023-44060-xDOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Funding: Austrian Science Fund (Fonds zur Frderung der Wissenschaftlichen Forschung) [FWF P 33696]; China Scholarship Council (CSC) [201908440933]; Competence Center Functional Nanoscale Materials (FunMat-II) (Vinnova) [2022-03071]; Swedish Research Council (VR) [Ndegrees VR-2021-04426]; Swedish Research Council [Ndegrees VR-2015-04630]
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Tailoring vacancies is a feasible way to improve the mechanical properties of ceramics. However, high concentrations of vacancies usually compromise the strength (or hardness). We show that a high elasticity and flexural strength could be achieved simultaneously using a nitride superlattice architecture with disordered anion vacancies up to 50%. Enhanced mechanical properties primarily result from a distinctive deformation mechanism in superlattice ceramics, i.e., unit-cell disturbances. Such a disturbance substantially relieves local high-stress concentration, thus enhancing deformability. No dislocation activity involved also rationalizes its high strength. The work renders a unique understanding of the deformation and strengthening/toughening mechanism in nitride ceramics.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Huang, YongErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria
(författare)
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Koutná, Nikola,1991-Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Institute of Materials Science and Technology, TU Wien, A-1060, Vienna, Austria(Swepub:liu)nikko93
(författare)
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Gao, ZecuiInstitute of Materials Science and Technology, TU Wien, Vienna, Austria
(författare)
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Sangiovanni, Davide Giuseppe,1979-Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten(Swepub:liu)davsa82
(författare)
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Fellner, SimonInstitute of Materials Science and Technology, TU Wien, Vienna, Austria
(författare)
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Haberfehlner, GeorgInstitute of Electron Microscopy and Nanoanalysis, Graz University of Technology, Graz, Austria
(författare)
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Jin, ShengliChair of Ceramics, Montanuniversität Leoben, Leoben, Austria
(författare)
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Mayrhofer, Paul H.Institute of Materials Science and Technology, TU Wien, Vienna, Austria
(författare)
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Kothleitner, GeraldInstitute of Electron Microscopy and Nanoanalysis, Graz University of Technology, Graz, Austria; Graz Centre for Electron Microscopy, Graz, Austria
(författare)
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Zhang, ZaoliErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria; Department of Materials Science, Montanuniversität Leoben, Leoben, Austria
(författare)
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Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, AustriaTeoretisk Fysik
(creator_code:org_t)
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Ingår i:Nature Communications: Nature Publishing Group14:12041-1723
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Chen, Zhuo
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Huang, Yong
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Fellner, Simon
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Zhang, Zaoli
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