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Multilayer lead-free piezoceramic composites: Influence of co-firing on microstructure and electromechanical behavior

Ayrikyan, Azatuhi ; Weyland, Florian ; Steiner, Sebastian ; Duerrschnabel, Michael ; Molina-Luna, Leopoldo ; Koruza, Jurij ; Webber, Kyle G. :
Multilayer lead-free piezoceramic composites: Influence of co-firing on microstructure and electromechanical behavior.
In: Journal of the American Ceramic Society (100) pp. 3673-3683. ISSN 00027820
[Artikel], (2017)

Kurzbeschreibung (Abstract)

In this study lead-free 2-2 and 0-3 ceramic/ceramic composites comprised of the non-ergodic relaxor 0.93(Bi1/2Na1/2)TiO3–0.07BaTiO3 and ergodic relaxor 0.94Bi0.5(Na0.75K0.25)0.5TiO3–0.06BiAlO3 were investigated. The macroscopic electromechanical behavior was characterized as a function of continuent content,revealing an enhancement in the unipolar strain from the multilayer composite structure. Systematic evaluation of the effects of co-sintering on microstructural properties, such as grain size and porosity, revealed potential mechanisms by which the increase in unipolar strain was achieved. In addition, interdiffusion between the constituents was observed, providing evidence for the formation of a functionally graded ceramic by co-sintering. These data are contrasted with highresolution energy dispersive X-ray microanalysis for measurement of chemical composition across the interface of 2-2 ceramics. These findings provide insight into how synthesis routes can be optimized for tailoring the enhancement of electromechanical properties of lead-free electroceramic composite systems.

Typ des Eintrags: Artikel
Erschienen: 2017
Autor(en): Ayrikyan, Azatuhi ; Weyland, Florian ; Steiner, Sebastian ; Duerrschnabel, Michael ; Molina-Luna, Leopoldo ; Koruza, Jurij ; Webber, Kyle G.
Titel: Multilayer lead-free piezoceramic composites: Influence of co-firing on microstructure and electromechanical behavior
Sprache: Englisch
Kurzbeschreibung (Abstract):

In this study lead-free 2-2 and 0-3 ceramic/ceramic composites comprised of the non-ergodic relaxor 0.93(Bi1/2Na1/2)TiO3–0.07BaTiO3 and ergodic relaxor 0.94Bi0.5(Na0.75K0.25)0.5TiO3–0.06BiAlO3 were investigated. The macroscopic electromechanical behavior was characterized as a function of continuent content,revealing an enhancement in the unipolar strain from the multilayer composite structure. Systematic evaluation of the effects of co-sintering on microstructural properties, such as grain size and porosity, revealed potential mechanisms by which the increase in unipolar strain was achieved. In addition, interdiffusion between the constituents was observed, providing evidence for the formation of a functionally graded ceramic by co-sintering. These data are contrasted with highresolution energy dispersive X-ray microanalysis for measurement of chemical composition across the interface of 2-2 ceramics. These findings provide insight into how synthesis routes can be optimized for tailoring the enhancement of electromechanical properties of lead-free electroceramic composite systems.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the American Ceramic Society
(Heft-)Nummer: 100
Verlag: The American Ceramic Socitey
Freie Schlagworte: composites, ferroelectricity/ferroelectric materials, laminates, piezoelectric materials/properties, sinter/ sintering
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe
Hinterlegungsdatum: 07 Aug 2017 09:33
Sponsoren: Hessisches Ministerium für Wissenschaft und Kunst, Deutsche Forschungsgemeinschaft, Grant/Award Number: WE 4972/2
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