公开(公告)号：US5350551A

公开(公告)日：1994-09-27

申请号：US773404

申请日：1991-10-09

Applicant: Kenji Shino

Inventor： Kenji Shino

IPC: C04B35/453 ,  C04B35/64 ,  F27D3/12 ,  F27B9/14 ,  F27D5/00

CPC classification number: C04B35/453 ,  C04B35/64 ,  F27D3/12

Abstract: A ceramic firing method particularly suitable for the fabrication of metallic oxide varistor bodies containing a major proportion of zinc oxide and a minor proportion of antimony oxide. Should moldings of this composition be fired in direct contact with a conventional molding stand, antimony oxide would diffuse readily into the stand, with the consequent creation of varistor bodies that are unsatisfactory in their surge withstanding capability. Therefore, in order to avoid such effluence of antimony oxide or like diffusible metallic oxide, the moldings are fired on a diffusion retarder which preferably is of substantially the same composition as the moldings, only with a higher proportion of the diffusible substance. The diffusion retarder may take the form of either flat overlays or loose particles of sintered ceramic material, both placed on the conventional molding stand.

Abstract translation: 一种陶瓷焙烧方法，特别适用于制造主要部分氧化锌和少量氧化锑的金属氧化物变阻器体。 如果这种组合物的模制品与常规模塑支架直接接触地烧制，则氧化锑将容易地扩散到支架中，由此产生不耐受其耐冲击能力的压敏电阻体。 因此，为了避免氧化锑或类似的可扩散金属氧化物的这种流出，模制品在弥散阻滞剂上焙烧，扩散延迟剂优选与模制品基本相同的组成，只有较高比例的可扩散物质。 扩散阻滞剂可以采用平坦的覆盖层或松散的烧结陶瓷材料颗粒的形式，两者都放置在常规的成型架上。

公开(公告)号：US4994218A

公开(公告)日：1991-02-19

申请号：US373055

申请日：1989-06-28

Applicant: Junichi Tokumoto ,  Minato Ando ,  Takashi Katoh

Inventor： Junichi Tokumoto ,  Minato Ando ,  Takashi Katoh

IPC: C04B35/453 ,  B28B1/30 ,  C01B13/32 ,  C04B35/10 ,  C04B35/622 ,  C04B35/624

CPC classification number: C01B13/32 ,  C04B35/624 ,  C01P2004/03

Abstract: A method of producing a gelled green compact for a thin sintered body is disclosed. The method comprises by steps (a) adding an acid to a solution of metal alkoxide to produce a sol which has the pH controlled within the range from approximately 2 to approximately 3; (b) adding an acid to the sol to lower the pH of the same; (c) adding an alkali to the sol to increase the pH of the same and control the pH within a range from approximately 1.5 to approximately 3; (d) drying the sol; and (e) molding the sol into a gelled green compact. The gelled green compact has a satisfied plasticity.

Abstract translation: 公开了一种生产用于薄烧结体的凝胶生坯的方法。 该方法包括以下步骤：（a）将酸添加到金属醇盐溶液中以产生pH控制在约2至约3范围内的溶胶; （b）向溶胶中加入酸以降低其pH; （c）向溶胶中加入碱以提高其pH值并将pH控制在约1.5至约3的范围内; （d）干燥溶胶; 和（e）将所述溶胶成型为凝胶状生坯。 凝胶生坯具有令人满意的可塑性。

公开(公告)号：US4906964A

公开(公告)日：1990-03-06

申请号：US319108

申请日：1989-03-06

Applicant: Osamu Imai ,  Ritsu Sato

Inventor： Osamu Imai ,  Ritsu Sato

IPC: C04B35/453 ,  H01C7/10 ,  H01C7/112

CPC classification number: H01C7/112

Abstract: An improved voltage non-linear sintered resistor which includes zinc oxide, bismuth oxide and at least one metal oxide additive selected from the group consisting of antimony oxide, silicon oxide, and mixtures thereof. The sintered resistor includes at least two crystalline phases including .alpha. and .delta. crystalline phases of bismuth oxide and has a quantity ratio of .alpha./.delta. crystalline phases of bismuth oxide of about 0.1-0.8.

公开(公告)号：US4730179A

公开(公告)日：1988-03-08

申请号：US80006

申请日：1987-07-31

Applicant: Masami Nakata ,  Osamu Imai

Inventor： Masami Nakata ,  Osamu Imai

IPC: C04B35/453 ,  H01C7/10 ,  H01C7/102 ,  H01C7/112 ,  H01C17/02

CPC classification number: H01C7/102 ,  H01C17/02 ,  H01C7/112 ,  Y10T29/49099

Abstract: A voltage non-linear resistor excellent in varistor voltage characteristics, lightning discharge current withstanding capability and life performance against applied voltage comprises a disc-like voltage non-linear element and a thin insulating covering layer integrally provided on the side surface of said element. In the resistor according to the invention, said element comprises zinc oxides as main ingredient, 0.1-2.0% bismuth oxides, as Bi.sub.2 O.sub.3, 0.1-2.0% cobalt oxides, as CO.sub.2 O.sub.3, 0.1-2.0% manganese oxides, as MnO.sub.2, 0.1-2.0% antimony oxides, as Sb.sub.2 O.sub.3, 0.1-2.0% chromium oxides, as Cr.sub.2 O.sub.3, 0.1-2.0% nickel oxides, as NiO, 0.001-0.05% aluminum oxides, as Al.sub.2 O.sub.3, 0.005-0.1% boron oxides, as B.sub.2 O.sub.3, 0.001-0.05% silver oxides, as Ag.sub.2 O and 7-11% silicon oxides, as SiO.sub.2, and said layer comprises 45-60% silicon oxides, as SiO.sub.2, 30-50% zinc oxides, as ZnO, 1-5% bismuth oxides, as Bi.sub.2 O.sub.3 and antimony oxides for the remainder (% stands for mole %). The resistor of the invention preferably further comprises a thin glassy layer superimposed on the insulating covering layer. The resistors are advantageously adaptable to arrestors, surge absorbers used in high voltage power systems.

公开(公告)号：US4719064A

公开(公告)日：1988-01-12

申请号：US28394

申请日：1987-03-20

Applicant: Masami Nakata ,  Osamu Imai

Inventor： Masami Nakata ,  Osamu Imai

IPC: C04B35/453 ,  H01C7/10 ,  H01C7/102 ,  H01C7/112 ,  H01C17/02

CPC classification number: H01C7/102 ,  H01C17/02 ,  H01C7/112 ,  Y10T29/49099

Abstract: A voltage non-linear resistor excellent in varistor voltage characteristics, lightning discharge current withstanding capability and life performance against applied voltage comprises a disclike voltage non-linear element and a thin insulating covering layer integrally provided on the side surface of said element. In the resistor according to the invention, said element comprises zinc oxides as main ingredient, 0.1-2.0% bismuth oxides, as Bi.sub.2 O.sub.3, 0.1-2.0% cobalt oxides, as Co.sub.2 O.sub.3, 0.1-2.0% manganese oxides, as MnO.sub.2, 0.1-2.0% antimony oxides, as Sb.sub.2 O.sub.3, 0.1-2.0% chromium oxides, as Cr.sub.2 O.sub.3, 0.1-2.0% nickel oxides, as NiO, 0.001,-0.05% aluminum oxides, as A1.sub.2 O.sub.3, 0.005-0.1% boron oxides, as B.sub.2 O.sub.3, 0.001-0.05% silver oxides, as Ag.sub.2 O and 7-11% silicon oxides, as SiO.sub.2, and said layer comprises 45-60% silicon oxides as SiO.sub.2, 30-50% zinc oxides, as ZnO, 1-5% bismuth oxides, as Bi.sub.2 O.sub.3 and antimony oxides for the remainder (% stands for mole %). The resistor of the invention preferably further comprises a thin glassy layer superimposed on the insulating covering layer. The resistors are advantageously adaptable to arrestors, surge absorbers used in high voltage power systems.

Abstract translation: 压敏电阻电压特性优异的电压非线性电阻器，耐电压耐受能力和耐电压寿命性能的电压非线性电阻器包括一体地设置在所述元件的侧表面上的盘状电压非线性元件和薄绝缘覆盖层。 在根据本发明的电阻器中，所述元件包括氧化锌作为主要成分，0.1-2.0％氧化铋，Bi 2 O 3，0.1-2.0％的钴氧化物，Co 2 O 3，0.1〜2.0％的氧化锰，MnO 2，0.1〜2.0 作为Cr 2 O 3，0.1-2.0％氧化铬，0.1-2.0％氧化镍，NiO，0.001,0.05％氧化铝，Al 2 O 3，0.005-0.1％氧化硼，B 2 O 3，0.001- 0.05％氧化银，Ag 2 O和7-11％氧化硅作为SiO 2，所述层包含45-60％的氧化硅作为SiO 2，30-50％的氧化锌，ZnO，1-5％氧化铋，Bi 2 O 3 和剩余的氧化锑（％代表摩尔％）。 本发明的电阻器优选还包括叠加在绝缘覆盖层上的薄玻璃层。 电阻器有利地适用于在高压电力系统中使用的避雷器，浪涌吸收器。

公开(公告)号：US4638401A

公开(公告)日：1987-01-20

申请号：US817805

申请日：1986-01-10

Applicant: Hung C. Ling ,  Man F. Yan

Inventor： Hung C. Ling ,  Man F. Yan

IPC: C04B35/453 ,  C04B35/495 ,  H01G4/12 ,  H01G4/10 ,  C04B33/34 ,  C04B35/46

CPC classification number: C04B35/453 ,  C04B35/495 ,  H01G4/1254 ,  Y10T29/435

Abstract: A novel low sintering temperature ceramic composition particularly suitable for multilayer ceramic capacitors is disclosed. The composition comprises a mixture represented by the formula(1-x)Bi.sub.2 (ZnNb.sub.2(1+d))yO.sub.3+6y+5dy (x)Bi.sub.3 (Ni.sub.2 Nb)O.sub.9where 0

Abstract translation: 公开了一种特别适用于多层陶瓷电容器的新型低烧结温度陶瓷组合物。 该组合物包含由式（1-x）Bi2（ZnNb2（1 + d））yO3 + 6y + 5dy（x）Bi3（Ni2Nb）O9表示的混合物，其中0

公开(公告)号：US4198443A

公开(公告)日：1980-04-15

申请号：US910073

申请日：1978-05-26

Applicant: John J. Pitha

Inventor： John J. Pitha

IPC: B05B7/22 ,  B05B13/02 ,  C04B35/453 ,  C23C4/02 ,  C23C4/10 ,  C23C4/12 ,  H01C7/10 ,  B05D1/00 ,  B05D1/08

CPC classification number: C04B35/453 ,  B05B13/0228 ,  B05B7/226 ,  C23C4/02 ,  C23C4/11 ,  C23C4/12 ,  H01C7/1006

Abstract: Sinterless zinc oxide varistor devices are prepared in one embodiment by flame spraying premixed zinc oxide and additive metal oxide powders onto a refractory substrate. The coated substrate is then treated by an abrasive removal process to form a trimmable resistor. A further embodiment comprises the use of a plasma spray process wherein carbonates and nitrates of the varistor constituents are oxidized in situ by entrainment within an oxygen gas stream and directing the plasma upon a rotating substrate. Ultra pure zinc oxide varistor devices having excellent electrical properties can be prepared in this manner.

Abstract translation: 在一个实施方案中通过将预混氧化锌和添加的金属氧化物粉末火焰喷涂到耐火基材上来制备无锡氧化锌变阻器装置。 然后通过研磨去除工艺处理涂覆的基底以形成可调节电阻器。 另一个实施方案包括使用等离子体喷涂方法，其中可变电阻组分的碳酸盐和硝酸盐通过夹带在氧气流内并将等离子体引导到旋转衬底上而被原位氧化。 可以以这种方式制备具有优异电性能的超纯氧化锌变阻器装置。

公开(公告)号：US4180483A

公开(公告)日：1979-12-25

申请号：US862734

申请日：1977-12-21

Applicant: Shih M. Ho ,  Tapan K. Gupta

Inventor： Shih M. Ho ,  Tapan K. Gupta

IPC: C04B35/453 ,  H01B1/08 ,  H01C7/112

CPC classification number: H01C7/112 ,  C04B35/453 ,  H01B1/08

Abstract: Zinc oxide powder and a single phase mixed oxide glass powder including bismuth oxide are mixed and then simultaneously heated and pressed to form a consolidated ceramic body of linear electrical characteristics. Subsequent annealing transforms the body to one of non-linear characteristics.

Abstract translation: 将氧化锌粉末和包含氧化铋的单相混合氧化物玻璃粉末混合，然后同时加热和压制以形成具有线性电气特性的固结陶瓷体。 随后的退火将身体转变成非线性特征之一。

公开(公告)号：US4174303A

公开(公告)日：1979-11-13

申请号：US811867

申请日：1977-06-30

Applicant: Severino Gaiffi ,  Hans-Peter Klein

Inventor： Severino Gaiffi ,  Hans-Peter Klein

IPC: H01C7/10 ,  C04B35/453 ,  H01C7/112 ,  H01B1/08

CPC classification number: H01C7/112

Abstract: A ceramic electrical material with high nonlinear resistance has a base of zinc oxide and at least one other component. A method is provided for producing such a material.

Abstract translation: 具有高非线性电阻的陶瓷电气材料具有氧化锌和至少一种其它组分的基底。 提供了制造这种材料的方法。

公开(公告)号：US4160748A

公开(公告)日：1979-07-10

申请号：US863922

申请日：1977-12-23

Applicant: Masatada Yodogawa ,  Susumu Miyabayashi ,  Yoshinari Yamashita ,  Takashi Yamamoto ,  Kohji Hayashi ,  Hisayoshi Ueoka

Inventor： Masatada Yodogawa ,  Susumu Miyabayashi ,  Yoshinari Yamashita ,  Takashi Yamamoto ,  Kohji Hayashi ,  Hisayoshi Ueoka

IPC: H01C7/10 ,  C04B35/453 ,  H01C7/112 ,  H01B1/08

CPC classification number: H01C7/112

Abstract: A non-linear resistor comprises a sintered body of a ceramic composition which comprises 99.93 to 50 mole % of zinc oxide as ZnO; 0.01 to 10 mole % of a specific rare earth oxide as R.sub.2 O.sub.3 (R represents lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium or lutetium) 0.01 to 10 mole % of an alkaline earth oxide as MO (M represents calcium, strontium or barium) and 0.05 to 30 mole % of cobalt oxide as CoO.

Abstract translation: 非线性电阻器包括陶瓷组合物的烧结体，其包含99.93〜50摩尔％的氧化锌作为ZnO; 0.01〜10摩尔％的作为R 2 O 3的特定稀土类氧化物（R表示镧，镨，钕，钐，铕，钆，铽，镝，钬，铒，ium，镱或镥），0.01〜10摩尔％ 氧化物为MO（M为钙，锶或钡），0.05〜30摩尔％的氧化钴为CoO。