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    • 4. 发明授权
    • Piezoelectric porcelain
    • 压电瓷
    • US5668071A
    • 1997-09-16
    • US604712
    • 1996-02-21
    • Toshikatsu KashiwayaHirofumi YamaguchiTadashi Otagiri
    • Toshikatsu KashiwayaHirofumi YamaguchiTadashi Otagiri
    • C04B35/493H01L41/187C04B35/472C04B35/499
    • C04B35/493H01L41/187
    • The present invention includes the following three types of piezoelectric porcelains. (1) In a piezoelectric porcelain having a composition of aPb[Mg.sub.1-X Ni.sub.X).sub.1/3 (Nb.sub.1-Y Ta.sub.Y).sub.2/3 ]O.sub.3 -bPbTiO.sub.3 -cPbZrO.sub.3, the coefficients a, b and c (mol %) and the substitution rate X satisfy all the following conditions; 15.ltoreq.a.ltoreq.45, 32.ltoreq.b.ltoreq.45, 10.ltoreq.c.ltoreq.50 and 0.1.ltoreq.X.ltoreq.0.9. (2) In a piezoelectric porcelain having a composition of aPb[Mg.sub.1-X Ni.sub.X).sub.1/3 (Nb.sub.1-Y Ta.sub.Y).sub.2/3 ]O.sub.3 -bPbTiO.sub.3 -cPbZrO.sub.3, the coefficients a, b and c (mol %) and the substitution rates X and Y satisfy all the following conditions; 15.ltoreq.a.ltoreq.45, 32.ltoreq.b.ltoreq.45, 10.ltoreq.c.ltoreq.50, 0.1.ltoreq.X.ltoreq.0.9, 0.1.ltoreq.Y.ltoreq.0.9 and Y-X.gtoreq.0.05. (3) In a piezoelectric porcelain having a composition of aPb[Mg.sub.1-X Ni.sub.X).sub.1/3 (Nb.sub.1-Y Ta.sub.Y).sub.2/3 ]O.sub.3 -bPbTiO.sub.3 -cPbZrO.sub.3, the coefficients a, b and c (mol %) and the substitution rates X and Y satisfy all the following conditions; 15.ltoreq.a.ltoreq.45, 32.ltoreq.b.ltoreq.45, 10.ltoreq.c.ltoreq.50, 0.2.ltoreq.X.ltoreq.0.9, 0.2.ltoreq.Y.ltoreq.0.9 and X-Y.gtoreq.0.05.
    • 本发明包括以下三种类型的压电陶瓷。 (1)在具有组成为Pb [Mg1-XNiX] + E,fra1 / 3 + EE(Nb1-YTaY)+ E,fra2 / 3 + EE] O3-bPbTiO3-cPbZrO3的压电陶瓷中,系数a ,b和c(mol%),取代率X满足以下所有条件; 15 = = 0.05。 (3)在具有Pb [Mg1-XNiX] + E,fra1 / 3 + EE(Nb1-YTaY)+ E,fra2 / 3 + EE] O3-bPbTiO3-cPbZrO3组成的压电陶瓷中,系数a ,b和c(mol%),取代率X和Y满足以下所有条件; 15 / = 0.05。
    • 7. 发明授权
    • Piezoelectric/electrostrictive ceramics and piezoelectric/electrostrictive device
    • 压电/电致伸缩陶瓷和压电/电致伸缩器件
    • US07737611B2
    • 2010-06-15
    • US12492409
    • 2009-06-26
    • Toshikatsu KashiwayaTakashi Ebigase
    • Toshikatsu KashiwayaTakashi Ebigase
    • H01L41/187
    • H01L41/1875C04B35/493C04B2235/3217C04B2235/3255C04B2235/3279H01L41/081H01L41/083H01L41/0973H01L41/273
    • The piezoelectric/electrostrictive properties and mechanical durability of a piezoelectric/electrostrictive ceramic can be improved. A piezoelectric/electrostrictive device has a laminated structure in which an electrode film, a piezoelectric/electrostrictive film, an electrode film, an piezoelectric/electrostrictive film, and an electrode film are laminated in the order mentioned on a thin portion of a substrate. The piezoelectric/electrostrictive films are ceramic films with a matrix of perovskite oxide that contains lead (Pb) as an A-site component and nickel (Ni), aluminum (Al), niobium (Nb), zirconium (Zr), and titanium (Ti) as B-site components. The piezoelectric/electrostrictive films are formed by firing as a unit the substrate that contains aluminum oxide and an intermediate coating film of perovskite oxide that contains components other than aluminum so that aluminum oxide is diffused from the substrate to the intermediate coating film.
    • 可以提高压电/电致伸缩陶瓷的压电/电致伸缩性能和机械耐久性。 压电/电致伸缩器件具有层压结构,其中电极膜,压电/电致伸缩膜,电极膜,压电/电致伸缩膜和电极膜以按照衬底薄部分的顺序层压。 压电/电致伸缩膜是具有钙钛矿氧化物基质的陶瓷膜,其包含铅(Pb)作为A位组分,镍(Ni),铝(Al),铌(Nb),锆(Zr)和钛( Ti)作为B位组分。 压电/电致伸缩膜通过以包含氧化铝的基板和包含除了铝以外的成分的钙钛矿氧化物的中间涂层作为单元进行烧结而形成,使得氧化铝从基板扩散到中间涂膜。