Lead-Free Multilayer Piezoceramic Composites : Effect of Cosintering on Electromechanical Properties

The macroscopic electromechanical behavior of lead-free multilayer composites was characterized from room temperature to 150 °C. The polar seed component consisted of a nonergodic relaxor (Bi1/2Na1/2)TiO3-7BaTiO3, with an electric-field-induced long-range ferroelectric order, whereas the nonpolar ma...

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Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - 1986. - 64(2017), 7 vom: 10. Juli, Seite 1127-1134
1. Verfasser: Ayrikyan, Azatuhi (VerfasserIn)
Weitere Verfasser: Kastner, Andreas, Khansur, Neamul Hayet, Yasui, Shintaro, Itoh, Mitsuru, Webber, Kyle G
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a The macroscopic electromechanical behavior of lead-free multilayer composites was characterized from room temperature to 150 °C. The polar seed component consisted of a nonergodic relaxor (Bi1/2Na1/2)TiO3-7BaTiO3, with an electric-field-induced long-range ferroelectric order, whereas the nonpolar matrix was an ergodic relaxor Bi0.5(Na0.75K0.25)0.5 TiO3-6BiAlO3 that undergoes a reversible electric-field-induced macroscopic nonpolar-to-polar transition. Microstructural evidence of the effects of cosintering are demonstrated through examination of grain size, interdiffusion, and pore structure. By manipulating the sintering interactions between the two constituents, namely, diffusion paths and residual stresses, both internal mechanical and electrical fields, as well as compositional gradients can be used to enhance the unipolar strain over that expected by a rule of mixtures approximation, thereby improving the properties needed for application of such materials to actuator systems 
650 4 |a Journal Article 
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700 1 |a Kastner, Andreas  |e verfasserin  |4 aut 
700 1 |a Khansur, Neamul Hayet  |e verfasserin  |4 aut 
700 1 |a Yasui, Shintaro  |e verfasserin  |4 aut 
700 1 |a Itoh, Mitsuru  |e verfasserin  |4 aut 
700 1 |a Webber, Kyle G  |e verfasserin  |4 aut 
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