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公开(公告)号：US4321155A
公开(公告)日：1982-03-23
申请号：US235639
申请日：1981-02-18
IPC分类号： C04B35/46 , C04B35/49 , H01B3/12 , H01L41/187
CPC分类号： H01L41/187
摘要： A piezoelectric oxide material suitable for an ultrasonic probe is provided. The piezoelectric material has the general formula ##EQU1## wherein 0.01.ltoreq.X.ltoreq.0.10 and 0.20.gtoreq.a.ltoreq.0.35, to which is added, as an additive, 0.05 to 2.0% by weight of at least one of MnO, NiO and Fe.sub.2 O.sub.3 based on the total content of the basic composition; the thickness coupling factor (Kt) is 50% or more; the ratio (Kt/Kp) of the thickness coupling factor (Kt) to the planar coupling factor (Kp) is 10 or more.
摘要翻译： 提供了适用于超声波探头的压电氧化物材料。 压电材料具有通式（Pb1-aCaa [（Co1 / 2W1 / 2）xTi1-x] O3，其中0.01≤x≤0.05且0.20≤a≤0.35， 作为添加剂，基于碱性组合物的总含量为0.05〜2.0重量％的MnO，NiO和Fe 2 O 3中的至少一种;厚度耦合系数（Kt）为50％以上;比例（Kt / Kp） 的厚度耦合系数（Kt）与平面耦合系数（Kp）的关系为10以上。
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公开(公告)号：US4544644A
公开(公告)日：1985-10-01
申请号：US593119
申请日：1984-03-26
IPC分类号： C04B35/00 , C04B35/497 , H01B3/12 , H01G4/12
CPC分类号： H01G4/1254 , C04B35/497 , H01B3/12
摘要： There is disclosed a high dielectric constant material which comprises a composite material comprising at least one of BaO and CaO; PbO; Fe.sub.2 O.sub.3 ; Nb.sub.2 O.sub.5 ; WO.sub.3 and CuO, said composite material being represented by the general formula:xPb(Fe.sub.1/2 Nb.sub.1/2 l )O.sub.3 -yM(Cu.sub.1/2 W.sub.1/2 )O.sub.3 -zPb(Fe.sub.2/3 W.sub.1/3 )O.sub.3wherein M is at least one of Ba and Ca, and x, y and z are defined in the specification.The disclosed dielectric material can also contain 0 to 1.0% by weight, relative to said composite material, of manganese oxide.
摘要翻译： 公开了一种高介电常数材料，其包括包含至少一种BaO和CaO的复合材料; PbO; Fe2O3; Nb2O5; WO3和CuO，所述复合材料由以下通式表示：xPb（Fe1 / 2Nb1 / 2I）O3-yM（Cu1 / 2W1 / 2）O3-zPb（Fe2 / 3W1 / 3）O3，其中M为 Ba和Ca中的至少一种，以及x，y和z在说明书中定义。 所公开的介电材料还可以含有相对于所述复合材料为0至1.0重量％的氧化锰。
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