摘要:
L'invention a trait à un procédé de préparation d'une solution sol-gel utilisable pour la préparation d'une céramique de titanate de baryum dopé par du hafnium et/ou par au moins un élément lanthanide comprenant les étapes suivantes: a) une étape de mise en contact d'un premier mélange comprenant un carboxylate de baryum et un solvant diol et d'un deuxième mélange comprenant un alcoxyde de titane et un alcoxyde de hafnium et/ou un alcoxyde d'un élément lanthanide dans un solvant monoalcoolique; b) une étape de distillation du mélange résultant de l'étape a), en vue d'éliminer au moins une partie du solvant monoalcoolique; c) une étape d'ajout, à chaud, d'acide acétique au mélange distillé de l'étape b).
摘要:
A ceramic composition, optionally in the form of a honeycomb structure, ceramic precursor compositions suitable for sintering to form said ceramic composition, a method for preparing said ceramic composition and ceramic honeycomb structure, a diesel particulate filter comprising said ceramic honeycomb structure, and a vehicle comprising said diesel particulate filter.
摘要:
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', 0 0.
摘要翻译:提供了具有增强的机械品质因数(Qm)和机械强度的无铅压电陶瓷。 压电陶瓷至少包括第一晶粒和第二晶粒。 第一晶粒的平均当量圆直径为2μm以上且30μm以下。 第一晶粒包括由以下通式(1)表示的钙钛矿型金属氧化物作为主要成分,第二晶粒包括由以下通式(2)表示的钙钛矿型金属氧化物作为主要成分 :(1)xBaTiO3-yCaTiO3-zCaZrO3; 和(2)x'BaTiO3-y'CaTiO3-z'CaZrO3,条件是x,y,z,x',y'和z'满足x + y + z = 1,x'+ y'+ z' =1,0≤x'≤0.15,0.85≤y'≤1,0≤z'≤0.05,x> x',0 0。
摘要:
A ceramic composition, optionally in the form of a honeycomb structure, ceramic precursor compositions suitable for sintering to form said ceramic composition, a method for preparing said ceramic composition and ceramic honeycomb structure, a diesel particulate filter comprising said ceramic honeycomb structure, and a vehicle comprising said diesel particulate filter.
摘要:
This invention relates to a ceramic multi-layered capacitor (1) which comprises a base body (2), which has ceramic layers (3), which are arranged to form a stack in a layer stacking direction (S), and first and second electrode layers (41, 42), which are arranged between the ceramic layers (3). The multi-layered capacitor (1) further comprises a first external contact (51), which is arranged on a first lateral face (61) of the base body (2) and is connected in an electrically conductive manner to the first electrode layers (41), and a second external contact (52), which is arranged on a second lateral face (62), opposite the first lateral face (61), of the base body (2) and is connected in an electrically conductive manner to the second electrode layers (42). The base body (2) has a width B along the layer stacking direction (S), a height H perpendicular to the first lateral face (61) and a length L perpendicular to the height H and perpendicular to the layer stacking direction (S), wherein the relationship B/H >= 0.2 applies for the ratio of width B to height H.
摘要:
本発明の圧電体磁器組成物は、主成分が、一般式{(1-x)(K 1-a-b Na a Li b ) m (Nb 1-c-d Ta c Sb d )O 3 ―xM1 n M2O 3 }(M1はCa、Sr又はBa、M2はTi、Zr又はSn)で表されると共に、0.005≦x≦0.1、0≦a≦0.9、0≦b≦0.3、0≦a+b≦0.9、0≦c≦0.5、0≦d≦0.1、0.9≦m≦1.1、及び0.9≦n≦1.1の範囲にあり、かつ、In、Sc、Y、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Yb、及びLuの中から選択された少なくとも1種の特定元素が、前記主成分100モルに対し総計で0.1~10モル(好ましくは、1.5~10モル)含有されている。好ましくは、更にMn、ni、Fe、Zn、Cu、又はMgを添加する。これにより微小電界時及び高電界時の双方で高い圧電d定数を高効率で安定的に得ることができるようにする。
摘要翻译:本发明提供了一种压电陶瓷组合物,其包含由通式{(1-x)(K 1-a-a)Na 2 O b B >)米 SUB>(NB 1-CD SUB> TA C SUB>锑ð SUB>)O 3 SUB> 其中M1表示Ca,Sr或Ba,M2表示Ti,Zr或Sn,0.005 = x = 0.1,0 = a = 0.9 ,0 = b = 0.3,0 = a + b = 0.9,0 = c = 0.5,0 = d = 0.1,0.9 = m = 1.1,0.9 = n = 1.1,0.1-10摩尔(优选1.5-10 基于100摩尔主要成分,选自In,Sc,Y,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb和Lu中的至少一种特定元素。 优选进一步添加Mn,Ni,Fe,Zn,Cu或Mg。 根据该结构,在非常小的电场和高电场的情况下,能够高效率地稳定地设置高压电体d。
摘要:
A dielectric composite material comprising at least two crystal phases of different components with TiO2 as a first component and a material selected from the group consisting of Ba1-xSrxTiO3 where x is from 0.3 to 0.7, Pb1-xCaxTiO3 where x is from 0.4 to 0.7, Sr1-xPbxTiO3 where x is from 0.2 to 0.4, Ba1-xCdxTiO3 where x is from 0.02 to 0.1, BaTi1-xZrxO3 where x is from 0.2 to 0.3, BaTi1-xSnxO3 where x is from 0.15 to 0.3, BaTi1-xHfxO3 where x is from 0.24 to 0.3, Pb1-1.3xLaxTiO3+0.2x where x is from 0.23 to 0.3, (BaTiO3)x(PbFe0.5Nb0.5O3)1-x where x is from 0.75 to 0.9, (PbTiO3)x(PbCo0.5W0.5O3)1-x where x is from 0.1 to 0.45, (PbTiO3)x(PbMg0.5W0.5O3)1-x where x is from 0.2 to 0.4, and (PbTiO3)x(PbFe0.5Ta0.5O3)1-x where x is from 0 to 0.2, as the second component is described. The dielectric composite material can be formed as a thin film upon suitable substrates.
摘要:
Es wird ein keramischer Vielschichtkondensator (1) angegeben, der einen Grundkörper (2) umfasst, welcher keramische Schichten (3), die entlang einer Schichtstapelrichtung (S) zu einem Stapel angeordnet sind, und zwischen den keramischen Schichten (3) angeordnete erste und zweite Elektrodenschichten (41, 42) aufweist. Der Vielschichtkondensator (1) umfasst weiterhin eine erste Außenkontaktierung (51), die auf einer ersten Seitenfläche (61) des Grundkörpers (2) angeordnet und mit den ersten Elektrodenschichten (41) elektrisch leitend verbunden ist, sowie eine zweite Außenkontaktierung (52), die auf einer der ersten Seitenfläche (61) gegenüber liegenden zweiten Seitenfläche (62) des Grundkörpers (2) angeordnet und mit den zweiten Elektrodenschichten (42) elektrisch leitend verbunden ist. Der Grundkörper (2) weist entlang der Schichtstapelrichtung (S) eine Breite B, senkrecht zur ersten Seitenfläche (61) eine Höhe H, sowie senkrecht zur Höhe H und senkrecht zur Schichtstapelrichtung (S) eine Länge L auf, wobei für das Verhältnis der Breite B zur Höhe H die Beziehung B/H ≥ 0,2 gilt.