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    • 1. 发明授权
    • Dielectric ceramic composition
    • 介电陶瓷组合物
    • US5439857A
    • 1995-08-08
    • US268819
    • 1994-06-30
    • Sakiko IwamotoHarunobu SanoYukio HamajiKunisaburo Tomono
    • Sakiko IwamotoHarunobu SanoYukio HamajiKunisaburo Tomono
    • C04B35/499H01G4/12C04B35/26
    • C04B35/499H01G4/1254
    • A dielectric ceramic composition consists essentially of a main component of a four component system, Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 --Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 --Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3, of which a part of Pb is replaced with at least one substituent selected from the group consisting of Ba, Ca and Sr; and a secondary component selected from the group consisting of w, Zn and Mg. The secondary component is incorporated in the main component in an amount of 0.05 to 10.0 parts by weight per 100 parts by weight of the main component in terms of each oxide, WO.sub.3, ZnO or MgO. The main component consists essentially of 4.0 to 93.0 mol % of Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3, 1.5 to 35.0 mol % of PbTiO.sub.3, 1.5 to 51.0 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, and 1.0 to 34.0 mol % of Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3, the amount of at least one substituent for Pb being 0.1 to 10 mol %.
    • 电介质陶瓷组合物主要由四组分Pb(Mg1 / 3Nb2 / 3)O3-PbTiO3-Pb(Ni1 / 3Nb2 / 3)O3-Pb(Zn1 / 2W1 / 2)O3的主要成分组成,其中 一部分Pb被选自Ba,Ca和Sr中的至少一种取代基取代; 和选自由w,Zn和Mg组成的组的次要组分。 相对于每种氧化物WO 3,ZnO或MgO而言,以每100重量份主成分为0.05〜10.0重量份的次要成分。 主要成分基本上由Pb(Mg1 / 3Nb2 / 3)O3的4.0〜93.0mol%,PbTiO3的1.5〜35.0mol%,Pb(Ni1 / 3Nb2 / 3)O3的1.5〜51.0mol%,以及1.0〜34.0 Pb(Zn1 / 2W1 / 2)O3的摩尔%,Pb的至少一个取代基的量为0.1〜10摩尔%。
    • 3. 发明授权
    • Non-reducible dielectric ceramic composition
    • 不可还原电介质陶瓷组合物
    • US5264402A
    • 1993-11-23
    • US57252
    • 1993-05-03
    • Harunobu SanoYukio HamajiKunisaburo Tomono
    • Harunobu SanoYukio HamajiKunisaburo Tomono
    • C04B35/468C04B35/49H01B3/12H01G4/12C04B35/46
    • C04B35/49C04B35/4682H01B3/12H01G4/1227
    • The present invention is directed to non-reducible dielectric composition consisting essentially of a main composition composed of a modified barium titanate system and additives (A) and (B) incorporated therein, said main composition consisting essentially of oxides of Ba, Ca, Ti, Zr, and Nb and having a composition represented by general formula:{(Ba.sub.1-x Ca.sub.x)O}.sub.m (Ti.sub.1-o-p Zr.sub.o Nb.sub.p)O.sub.2+p/2'wherein x, o, p and m satisfy the relationships of, ##EQU1## said additive (A) being composed at least one oxides selected from the group consisting of oxides of Mn, Fe, Cr, Co, and Ni, said additive (A) being incorporated into said main composition in an amount of 0.02 to 2.0 moles per 100 moles of said main composition in terms of respective oxides, MnO.sub.2, FeO.sub.3, Cr.sub.2 O.sub.3, CoO, and NiO, said additive (B) consisting of SiO.sub.2 and/or ZnO and incorporated into said main composition in an amount of 0.1 to 2.0 moles per 100 moles of said main composition. The composition is useful as material for monolithic ceramic capacitor.
    • 本发明涉及不可还原的电介质组合物,其基本上由由改性钛酸钡体系组成的主要组合物和其中加入的添加剂(A)和(B)组成,所述主要组合物主要由Ba,Ca,Ti, Zr和Nb,并且具有由通式{(Ba1-xCax)O} m(Ti1-o-pZroNbp)O2 + p / 2'表示的组成,其中x,o,p和m满足关系, 所述添加剂(A)由选自氧化物中的至少一种氧化物组成,所述氧化物选自氧化物,氧化物,氧化物,氧化物,氧化物,氧化物,氧化物 的Mn,Fe,Cr,Co和Ni中的至少一种,所述添加剂(A)以相对于氧化物,MnO 2,FeO 3,Cr 2 O 3, CoO和NiO,所述添加剂(B)由SiO 2和/或ZnO组成,并且以每100摩尔所述主要com计为0.1至2.0摩尔的量加入所述主组合物中 位置。 该组合物可用作单片陶瓷电容器的材料。
    • 9. 发明授权
    • Dielectric ceramic composition and monolithic ceramic capacitor using
same
    • 介电陶瓷组合物和使用其的叠层陶瓷电容器
    • US5822176A
    • 1998-10-13
    • US879536
    • 1997-06-20
    • Harunobu SanoHiroyuki WadaYukio Hamaji
    • Harunobu SanoHiroyuki WadaYukio Hamaji
    • H01G4/12H01G4/30H01G4/06H01G4/20H01G4/228
    • H01G4/1227
    • A dielectric ceramic composition and a monolithic ceramic capacitor using the composition are provided. The dielectric ceramic composition includes: barium titanate; at least one rare earth oxide selected from terbium oxide, dysprosium oxide, holmium oxide, erbium oxide and ytterbium oxide; manganese oxide and nickel oxide; and magnesium oxide in an amount of from 0.5 to 3.0 mols in terms of MgO, and silicon oxide in an amount of from 0.2 to 5.0 mols in terms of SiO.sub.2, relative to 100 mols of the essential component having the following compositional formula: (1--.alpha.--.beta.){BaO}.sub.m TiO.sub.2 +.alpha.Re.sub.2 O.sub.3 +.beta.(Mn.sub.1-x Ni.sub.x)O where Re.sub.2 O.sub.3 is at least one selected from Tb.sub.2 O.sub.3, Dy.sub.2 O.sub.3, Ho.sub.2 O.sub.3, Er.sub.2 O.sub.3 and Yb.sub.2 O.sub.3 ; and .alpha., .beta., m and x are as follows: 0.0025.ltoreq..alpha..ltoreq.0.020 0.0025.ltoreq..beta..ltoreq.0.04 .beta./.alpha..ltoreq.4 0.ltoreq.x
    • 提供介电陶瓷组合物和使用该组合物的叠层陶瓷电容器。 电介质陶瓷组合物包括:钛酸钡; 选自氧化铽,氧化镝,氧化钬,氧化铒和氧化镱中的至少一种稀土氧化物; 氧化锰和氧化镍; 相对于具有以下组成式的必需成分为100摩尔,氧化镁的摩尔数为0.2〜5.0摩尔,SiO 2为0.2摩尔% - α-β){BaO} mTiO 2 +αRe 2 O 3 +β(Mn 1-x Nix)O其中Re 2 O 3是选自Tb 2 O 3,Dy 2 O 3,Ho 2 O 3,Er 2 O 3和Yb 2 O 3中的至少一种; 和α,β,m和x如下:0.0025