Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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PIEZOELECTRIC CERAMICS, AND PIEZOELECTRIC ELEMENT, AND ELECTRONIC EQUIPMENT CONTAINING PIEZOELECTRIC CERAMICS
Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO3-yCaTiO3-zCaZrO3; and (2) x′BaTiO3-y′CaTiO3-z′CaZrO3, provided that x, y, z, x′, y′, and z′ satisfy x+y+z=1, x′+y′+z′=1, 0≦x′≦0.15, 0.85≦y′≦1, 0≦z′≦0.05, x>x′, 00.
PIEZOELECTRIC CERAMICS, AND PIEZOELECTRIC ELEMENT, AND ELECTRONIC EQUIPMENT CONTAINING PIEZOELECTRIC CERAMICS
Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO3-yCaTiO3-zCaZrO3; and (2) x′BaTiO3-y′CaTiO3-z′CaZrO3, provided that x, y, z, x′, y′, and z′ satisfy x+y+z=1, x′+y′+z′=1, 0≦x′≦0.15, 0.85≦y′≦1, 0≦z′≦0.05, x>x′, 00.
PIEZOELECTRIC CERAMICS, AND PIEZOELECTRIC ELEMENT, AND ELECTRONIC EQUIPMENT CONTAINING PIEZOELECTRIC CERAMICS
SHIMADA MIKIO (Autor:in) / AIBA TOSHIAKI (Autor:in) / IFUKU TOSHIHIRO (Autor:in) / MATSUDA TAKANORI (Autor:in) / KUBOTA MAKOTO (Autor:in) / FURUTA TATSUO (Autor:in) / HAYASHI JUMPEI (Autor:in)
13.04.2017
Patent
Elektronische Ressource
Englisch
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