公开(公告)号：US5766434A

公开(公告)日：1998-06-16

申请号：US797652

申请日：1997-01-31

申请人： Namitsugu Fujii ,  Hiromi Sano ,  Yasumichi Hotta ,  Naoto Miwa ,  Motoaki Satou

发明人： Namitsugu Fujii ,  Hiromi Sano ,  Yasumichi Hotta ,  Naoto Miwa ,  Motoaki Satou

IPC分类号： G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4075 ,  G01N27/4077

摘要： An oxygen concentration detecting device comprises a solid electrolyte body, inner and outer electrodes formed on the opposite sides of the solid electrolyte body, and a protective layer formed on the outer electrode and comprised of coarse particles and fine particles mutually bonded through an inorganic binder while substantially keeping the original forms of the both types of particles. A ratio of an average particle size, RB, of the coarse particles to an average particle size, RA, of the fine particles of 30:1 or above, and a content, WA, of the fine particles in the protective layer based on the total content, W, of the content, WA, of the fine particles and the content, WB, of the coarse particles on the weight basis is in the range of 15 to 80 %. A method for fabricating the detecting device having such a protective layer as set out above is also described.

摘要翻译： 氧浓度检测装置包括固体电解质体，形成在固体电解质体的相对侧的内部和外部电极，以及形成在外部电极上的保护层，其由通过无机粘合剂相互粘合的粗粒子和微粒组成， 基本保持两种类型颗粒的原始形式。 基于上述保护层中的微粒的粗粒子的平均粒径RB与微粒的平均粒径RA（30:1以上）和含量WA的比例 粗颗粒的含量W W，微粒的含量W和重量的含量WB在15〜80％的范围内。 还描述了制造具有上述保护层的检测装置的方法。

公开(公告)号：US06174489B1

公开(公告)日：2001-01-16

申请号：US09140422

申请日：1998-08-26

申请人： Kiyomi Kobayashi ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Namitsugu Fujii

发明人： Kiyomi Kobayashi ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Namitsugu Fujii

IPC分类号： C07B3332

CPC分类号： G01N27/4073

摘要： A method for manufacturing an oxygen sensor unit of the type which includes at least a shaped body of a solid electrolyte, an inner electrode provided on an inside surface of the shaped body and exposed to a reference gas, an outer electrode provided on an outside surface of the shaped body and exposed to a gas to be measured, and a porous protective layer covering the outer electrode and a portion of the shaped body adjoining to said outer electrode wherein the solid electrolyte is made of a mixture of zirconia and a stabilizer therefor and is constituted of a sintered product of partially stabilized zirconia. The method is characterized in that the partially stabilized, sintered zirconia is obtained according to a high temperature sintering process which includes at least the step of sintering the mixture at a temperature of 1200° C. or over for a duration of 2 to 6 hours wherein a value obtained by integrating a variation in the sintering temperature with the duration in the sintering process is in the range of 300 to 1500° C.·hour.

摘要翻译： 一种制造氧传感器单元的方法，该氧传感器单元至少包括固体电解质的成形体，设置在成形体的内表面上并暴露于参考气体的内电极，设置在外表面上的外电极 并暴露于要测量的气体，以及覆盖外电极的多孔保护层和与所述外电极相邻的成形体的一部分，其中固体电解质由氧化锆及其稳定剂的混合物制成， 由部分稳定化的氧化锆的烧结体构成。 该方法的特征在于，部分稳定的烧结氧化锆根据高温烧结方法获得，其至少包括在1200℃或更高温度下烧结混合物2至6小时的步骤，其中 通过将烧结温度的变化与烧结过程中的持续时间相结合而获得的值在300〜1500℃的范围内。

公开(公告)号：US5554839A

公开(公告)日：1996-09-10

申请号：US208786

申请日：1994-03-11

申请人： Tadashi Tsuruta ,  Masatoshi Suzuki ,  Hiromi Sano ,  Namitsugu Fujii ,  Hiroshi Sugino

发明人： Tadashi Tsuruta ,  Masatoshi Suzuki ,  Hiromi Sano ,  Namitsugu Fujii ,  Hiroshi Sugino

IPC分类号： G01N27/12 ,  C04B38/00 ,  G01N27/409 ,  H05B3/14 ,  H05B3/18 ,  H05B3/46 ,  H05B3/44

CPC分类号： H05B3/141 ,  C04B38/0003 ,  H05B3/46 ,  C04B2111/00844

摘要： A ceramic heater which can be produced easily, induces no increase of production cost and can restrict the resistance change of a heating body due to migration. According to the present invention, a gap is formed between a ceramic sintered body and a heating body. Thus, migration in which cations are seized within the gap is caused so as to impede the cations from entering into the heating body. This makes it difficult for the cations to migrate and the volume in which the heating body is expanded is secured by the gap 13.

摘要翻译： 可以容易地制造的陶瓷加热器不会导致生产成本的增加，并且可以限制由于迁移而导致的加热体的电阻变化。 根据本发明，在陶瓷烧结体和加热体之间形成间隙。 因此，引起在间隙内捕获阳离子的迁移，以阻止阳离子进入加热体。 这使得阳离子难以迁移，并且通过间隙13确保加热体膨胀的体积。

公开(公告)号：US4476008A

公开(公告)日：1984-10-09

申请号：US541001

申请日：1983-10-11

申请人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Masahiro Shibata ,  Toshitaka Saito ,  Mitihiro Yamakawa

发明人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Masahiro Shibata ,  Toshitaka Saito ,  Mitihiro Yamakawa

IPC分类号： G01N27/41 ,  B05D1/12 ,  G01N27/407 ,  G01N27/409 ,  G01N27/58

CPC分类号： G01N27/4075 ,  G01N27/407

摘要： An oxygen gas concentration-sensing device comprises a solid electrolyte body which is prepared from an oxygen ion-permeable metal oxide and whose first surface is exposed to the gas to be sensed and the second surface is exposed to a reference gas. First and second electrodes are respectively pressed against the first and second surface of the solid electrolyte body. The first electrode exposed to the gas is covered with a porous gas diffusion-resisting layer. This gas diffusion-resisting layer is chosen to have an average pore-size ranging from 300 .ANG. to 400 .ANG..

摘要翻译： 氧气浓度检测装置包括由氧离子可透过金属氧化物制备的固体电解质体，其第一表面暴露于待检测气体，第二表面暴露于参考气体。 第一和第二电极分别压靠固体电解质体的第一和第二表面。 暴露于气体的第一电极被多孔气体扩散阻挡层覆盖。 选择该气体扩散阻隔层具有范围从300安培到400安培的平均孔径。

公开(公告)号：US4402820A

公开(公告)日：1983-09-06

申请号：US403045

申请日：1982-07-29

申请人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Mitihiro Yamakawa ,  Toshitaka Saito

发明人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Mitihiro Yamakawa ,  Toshitaka Saito

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/56 ,  G01N27/58

CPC分类号： G01N27/4075 ,  G01N27/4077

摘要： A limiting current type oxygen analyzer designed for detecting oxygen concentration comprising a solid electrolyte element made from an oxygen ion conductive metal oxide and a pair of porous film electrodes provided on the inner and outer sides of said element respectively, at least one side electrodes being coated with a gas-diffusive resistive layer made from a porous insulating metal oxide, wherein the oxygen ions in the gas to which said element is exposed are caused to diffuse in the inside of said electrolyte element by applying a given voltage across said both electrodes and the limiting current corresponding to the concentration of said diffused oxygen ions is measured to determine the oxygen concentration in the gas to be analyzed, further characterized in that said gas-diffusive resistive layer is composed of a three-layer structure consisting of the first, second and third layers counted from the electrode side, said first layer having porosity of 11-15%, the second layer 6-8% and the third layer 15-20%.

摘要翻译： 设置用于检测氧浓度的极限电流型氧分析器，其包含由氧离子导电金属氧化物制成的固体电解质元件和分别设置在所述元件的内侧和外侧上的一对多孔膜电极，至少一个侧电极被涂覆 具有由多孔绝缘金属氧化物制成的气体扩散电阻层，其中使所述元件暴露的气体中的氧离子在所述电解质元件的内部通过施加给定的电压跨所述两个电极而扩散，并且 测量对应于所述扩散的氧离子的浓度的极限电流，以确定待分析气体中的氧浓度，其特征还在于所述气体扩散电阻层由三层结构组成，所述三层结构由第一，第二和第 从电极侧计数第三层，所述第一层具有11-15％的孔隙率，第二层6- 8％，第三层15-20％。

公开(公告)号：US07045047B2

公开(公告)日：2006-05-16

申请号：US10323918

申请日：2002-12-20

申请人： Makoto Nakae ,  Susumu Naito ,  Namitsugu Fujii ,  Hiromi Sano ,  Tomio Sugiyama ,  Kazuya Nakagawa

发明人： Makoto Nakae ,  Susumu Naito ,  Namitsugu Fujii ,  Hiromi Sano ,  Tomio Sugiyama ,  Kazuya Nakagawa

IPC分类号： G01N27/41

CPC分类号： G01N27/4074

摘要： A gas sensor element which may be employed in measuring the concentration of gas such O2, NOx, or CO. The gas sensor element consists of an electrochemical cell made up of a solid electrolyte body formed by a partially stabilized zirconia and a pair of electrodes disposed on the solid electrolyte body. The electrochemical cell is subjected to an aging treatment in which the dc current is applied to the electrodes at a given voltage to enhance the activation of the electrochemical cell.

摘要翻译： 可用于测量气体浓度O 2，NO x或CO的气体传感器元件。气体传感器元件由电化学电池组成，该电化学电池由固体电解质体构成，该固体电解质体由部分 稳定的氧化锆和设置在固体电解质体上的一对电极。 对电化学电池进行时效处理，其中在给定电压下将直流电流施加到电极以增强电化学电池的活化。

公开(公告)号：US06354134B1

公开(公告)日：2002-03-12

申请号：US09196129

申请日：1998-11-20

申请人： Tooru Katafuchi ,  Kiyomi Kobayashi ,  Namitsugu Fujii ,  Hiromi Sano

发明人： Tooru Katafuchi ,  Kiyomi Kobayashi ,  Namitsugu Fujii ,  Hiromi Sano

IPC分类号： G01N2746

CPC分类号： G01N27/4075 ,  G01N27/407

摘要： A solid electrolytic body has an inside space serving as a reference gas chamber. A sensing electrode and a reference electrode are formed on the surface of the solid electrolytic body. A heater is disposed in the reference gas chamber. A contact portion comprises a region where the heater is brought into contact with the inner surface of the solid electrolytic body and an opposing region on the outer surface of the solid electrolytic body. The sensing electrode includes at least part of the contact portion. A gas receiving surface region, exposed to the measuring gas, extends from an element tip to a position spaced by a distance L away from the element tip. At least part of the contact portion is located in a region extending from the element tip to a position spaced by a distance 0.4L away from the element tip. The sensing electrode is entirely located in a region extending from the element tip to a position spaced by a distance 0.8L away from the element tip.

摘要翻译： 固体电解质体具有作为基准气体室的内部空间。 感测电极和参考电极形成在固体电解体的表面上。 加热器设置在参考气室中。 接触部包括加热器与固体电解质体的内表面接触的区域和固体电解体的外表面上的相对区域。 感测电极包括接触部分的至少一部分。 暴露于测量气体的气体接收表面区域从元件尖端延伸到远离元件尖端间隔距离L的位置。 接触部分的至少一部分位于从元件尖端延伸到远离元件尖端间隔0.4L的位置的区域中。 感测电极完全位于从元件尖端延伸到与元件尖端间隔0.8L的位置的区域中。

公开(公告)号：US5948225A

公开(公告)日：1999-09-07

申请号：US861226

申请日：1997-05-21

申请人： Toru Katafuchi ,  Kiyomi Kobayashi ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito

发明人： Toru Katafuchi ,  Kiyomi Kobayashi ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito

IPC分类号： G01N27/409 ,  G01N27/407

CPC分类号： G01N27/4075

摘要： An oxygen sensor element includes a solid electrolyte having cavities on a surface thereof and an electrode formed on the surface of the solid electrolyte. In a method of producing the oxygen sensor element, a solution containing a noble metal compound for nucleus formation is first applied to an electrode forming portion of the solid electrolyte to form a coating film. Then, the coating film is heat-treated to form a nucleus forming portion where noble metal nuclei are deposited. Subsequently, metal plating is applied to the nucleus forming portion to form a plating film deeply entering the cavities. Thereafter, the plating film is burned to form the electrode deeply entering the cavities.

摘要翻译： 氧传感器元件包括在其表面上具有空腔的固体电解质和形成在固体电解质表面上的电极。 在制造氧传感器元件的方法中，首先将含有形成核的贵金属化合物的溶液施加到固体电解质的电极形成部分以形成涂膜。 然后，对涂膜进行热处理，形成析出贵金属核的成核部。 随后，对核形成部分施加金属电镀以形成深入到空腔中的镀膜。 此后，电镀膜被燃烧以形成深入空腔的电极。

公开(公告)号：US06951601B1

公开(公告)日：2005-10-04

申请号：US08838910

申请日：1997-04-11

申请人： Akio Tanaka ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Kazunori Suzuki ,  Masaya Fujimoto

发明人： Akio Tanaka ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Kazunori Suzuki ,  Masaya Fujimoto

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/407 ,  G01N27/409

CPC分类号： G01N27/4075 ,  G01N27/4067

摘要： The oxygen concentration detector of the present invention includes a sensor element having a solid electrolyte and having an external electrode and an internal electrode provided on the external surface and the internal surface, respectively, and a heater provided adjacent to the internal surface of the sensor element, in which a high-emissivity layer consisting of a material having a high emissivity is provided on the internal surface of the sensor element and/or the surface of the heater.

摘要翻译： 本发明的氧浓度检测器具有固体电解质的传感器元件，分别具有设置在外表面和内表面上的外部电极和内部电极，以及设置在传感器元件的内表面附近的加热器 其中在传感器元件的内表面和/或加热器的表面上设置由具有高发射率的材料构成的高发射率层。

公开(公告)号：US5935399A

公开(公告)日：1999-08-10

申请号：US792737

申请日：1997-01-31

申请人： Akio Tanaka ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito ,  Katsuhiro Ishikawa

发明人： Akio Tanaka ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito ,  Katsuhiro Ishikawa

IPC分类号： G01N27/407

CPC分类号： G01N27/4075

摘要： An air-fuel ratio sensing element comprises a cup-shaped solid electrolyte with one end opened and the other end closed, an external electrode provided on an outer wall surface of the solid electrolyte so as to be exposed to measured gas, and an internal electrode provided on an inner wall surface of the solid electrolyte in a confronting relationship to the external electrode. A first insulating layer, made of a gas-permeable and nonconductive porous material, is provided on the external electrode at least in a region used for detecting of an air-fuel ratio. A second insulating layer is provided outside the first insulating layer and, a heater layer as provided between the first insulating layer and the second insulating layer.

摘要翻译： 空燃比检测元件包括一端敞开而另一端闭合的杯形固体电解质，设置在固体电解质的外壁表面上以暴露于测量气体的外部电极，以及内部电极 以与外部电极相对的关系设置在固体电解质的内壁表面上。 至少在用于检测空燃比的区域中，在外部电极上设置由透气且不导电的多孔材料制成的第一绝缘层。 第二绝缘层设置在第一绝缘层的外侧，以及设置在第一绝缘层和第二绝缘层之间的加热器层。