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    • 3. 发明授权
    • Method of producing homogeneous sintered ZnO non-linear resistors
    • 均匀烧结ZnO非线性电阻的制备方法
    • US4094061A
    • 1978-06-13
    • US631297
    • 1975-11-12
    • Tapan K. GuptaWilliam D. Straub
    • Tapan K. GuptaWilliam D. Straub
    • H01C7/10H01C7/112H01C7/02
    • H01C7/112Y10T29/49085
    • A method of making a homogeneous ZnO sintered resistor body, having a substantially uniform density, which can exhibit non-linear V-I characteristics by a bulk effect, comprises the steps of: (1) mixing about 75 mole % to about 98 mole % of small, finely divided, solid ZnO and about 2 mole % to about 25 mole % of at least one small, finely divided, solid additive effective to produce non-linear characteristics within the body, preferably one or more oxides selected from the group consisting of TiO.sub.2, Ta.sub.2 O.sub.5, FeO, In.sub.2 O.sub.3, B.sub.2 O.sub.3, Al.sub.2 O.sub.3, SnO.sub.2, Sn.sub.3 O.sub.4, Mo.sub.2 O, SiO.sub.2, BaO, SrO, PbO, NiO, CaO, MgO, Bi.sub.2 O.sub.3, Co.sub.3 O.sub.4, CoO, MnO, MnO.sub.2, Cr.sub.2 O.sub.3, and Sb.sub.2 O.sub.3, with an aqueous binder solution comprising a fugitive organic, water soluble binder, wherein the weight ratio of the aforesaid mixed finely divided solids:binder is between about 100:1 to about 100:10, to provide a slurry; (2) simultaneously drying, mixing and agglomerating the slurried solids into a mass of larger substantially spherical particles containing the finely divided solids and binder; (3) pressing a mass of the agglomerated particles or powder in a uni-axial press, to provide a cohesive pressed green body having a substantially uniform density; and then (4) heating the pressed body, first at a temperature rate increase effective to slowly decompose and remove the fugitive binder from the body and then heating at a temperature of between about 625.degree. to about 1,400.degree. C for a time effective to sinter together the particles of the body.
    • 制造均匀的ZnO烧结电阻体的方法,具有基本上均匀的密度,其可以通过本体效应显示非线性VI特性,包括以下步骤:(1)将约75摩尔%至约98摩尔%的小 ,细分散的固体ZnO和约2摩尔%至约25摩尔%的至少一种小的,细碎的固体添加剂,其有效地在体内产生非线性特征,优选一种或多种选自TiO 2的氧化物 ,Ta2O5,FeO,In2O3,B2O3,Al2O3,SnO2,Sn3O4,Mo2O,SiO2,BaO,SrO,PbO,NiO,CaO,MgO,Bi2O3,Co3O4,CoO,MnO,MnO2,Cr2O3和Sb2O3, 溶液,其包含挥发性有机水溶性粘合剂,其中上述混合的细碎固体:粘合剂的重量比为约100:1至约100:10,以提供浆料; (2)将所述浆状固体同时干燥,混合和附聚到包含细碎固体和粘合剂的较大的基本上为球形的颗粒中; (3)在单轴压榨机中挤压团聚的颗粒或粉末,以提供具有基本均匀的密度的粘性压制生坯; 然后(4)加热压制体,首先以增加温度的速度进行加热,从而缓慢分解和从体内除去短暂的粘合剂,然后在约625℃至约1400℃的温度下加热一段时间以有效地烧结 一起身体的颗粒。
    • 4. 发明授权
    • Self-limiting capacitor formed using a plurality of thin film
semiconductor ceramic layers
    • 使用多个薄膜半导体陶瓷层形成的自限电容器
    • US4729058A
    • 1988-03-01
    • US940348
    • 1986-12-11
    • Tapan K. GuptaWilliam D. Straub
    • Tapan K. GuptaWilliam D. Straub
    • H01C7/112H01C7/12H01C7/18H01G4/10H01G4/12H01G7/00
    • H01G4/10H01C7/112H01C7/12H01C7/18H01G4/1209Y10T29/435
    • The invention discloses a self-limiting ceramic capacitor characterized by high capacitance and transient voltage protective properties comprising a plurality of thin layers of a zinc oxide-based ceramic material having non-linear resistance characteristics with each layer having a conductive coating on at least one surface thereof and the coated ceramic layers sintered together to form a laminated stack. A conductive coating comprising a first electrode of the capacitor is formed on a first edge of the laminated stack of layers and is in electrical communication with a portion of the conductive coating on some of the layers extending to that edge of the layer. Conductive material comprising a second electrode of the capacitor is formed on a second and opposite edge of the laminated stack of layers in electrical communication with a portion of the conductive coating on at least some of the other layers in the plurality of layers having a portion of the conductive coating thereon extending to the second and opposite edge of the layers.
    • 本发明公开了一种自限制陶瓷电容器,其特征在于具有高电容和瞬态电压保护特性,其包括具有非线性电阻特性的多个氧化锌基陶瓷材料薄层,每个层在至少一个表面上具有导电涂层 并且将包覆的陶瓷层烧结在一起以形成层压叠层。 包括电容器的第一电极的导电涂层形成在层叠叠层叠层的第一边缘上,并且与延伸到该层边缘的一些层上的导电涂层的一部分电连通。 包括电容器的第二电极的导电材料形成在层叠叠层叠层的第二和相对边缘上,该导电材料与多层中的至少一些其它层上的导电涂层的一部分电连通, 其上的导电涂层延伸到层的第二和相对边缘。
    • 9. 发明授权
    • Devitrification inhibitor in low dielectric borosilicate glass
    • 低介电硼硅酸盐玻璃中的脱氮抑制剂
    • US5312784A
    • 1994-05-17
    • US925630
    • 1992-08-07
    • Jau-Ho JeanTapan K. Gupta
    • Jau-Ho JeanTapan K. Gupta
    • C03C8/14C03C3/089
    • C03C8/14
    • A ceramic composition for forming ceramic dielectric body having a dielectric constant of less than about 5.5 and a TCE of less than about 5.0 ppm/.degree.C. The composition comprises a mixture of finely divided particles of 10-90 vol. % borosilicate glass and 10-90 vol. % of a material selected from the group consisting of Ga.sub.2 O.sub.3, Ga.sub.2 SiO.sub.5, Ga.sub.2 TiO.sub.5, GaAs, GaPO.sub.4 and any gallium-contained compounds to inhibit the formation of crystalline forms of silica. The composition can be used with a polymeric binder to produce an unfired green tape which is co-fireable with high conductivity metallurgies such as gold, silver and silver/palladium.
    • 一种用于形成介电常数小于约5.5且TCE小于约5.0ppm /℃的陶瓷介电体的陶瓷组合物。该组合物包含10-90体积%的细碎颗粒的混合物。 %硼硅酸盐玻璃和10-90体积% %的选自Ga 2 O 3,Ga 2 SiO 5,Ga 2 TiO 5,GaAs,GaPO 4的材料和任何含镓化合物,以抑制二氧化硅结晶形式的形成。 该组合物可以与聚合物粘合剂一起使用以产生与高电导率冶金如金,银和银/钯共烧的未烧绿带。