公开(公告)号：US4328294A

公开(公告)日：1982-05-04

申请号：US231842

申请日：1981-02-05

申请人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： C04B35/48 ,  C04B35/486 ,  G01N27/407 ,  H01M8/12 ,  H01M6/18

CPC分类号： G01N27/4073 ,  C04B35/486 ,  H01M8/1253 ,  Y02E60/525 ,  Y02P70/56

摘要： A solid electrolyte for an oxygen concentration sensor is provided by mixing ZrO.sub.2 and about 6.5 to about 8% by mol of a stabilizer such as Y.sub.2 O.sub.3, grinding the mixture to give a BET specific surface area of about 9 to 20 m.sup.2 /g, adding to the ground mixture a forming aid, forming the mixture into a predetermined configuration and firing the formed mixture at about 1420.degree. to 1570.degree. C. The electrolyte has a surface-average grain size of about 5 microns or less and a structure of a cubic phase alone at the surface thereof and, furthermore, may contain about 5% or less of a monoclinic phase per the total of the cubic and monoclinic phases, in a finely ground state.

摘要翻译： 通过将ZrO 2和约6.5至约8摩尔％的稳定剂如Y 2 O 3混合来提供氧浓度传感器的固体电解质，研磨该混合物以得到约9至20m 2 / g的BET比表面积， 研磨的混合物形成助剂，将混合物形成预定的构型并在约1420℃至1570℃下焙烧形成的混合物。电解质的表面平均粒度为约5微米或更小，立方相的结构 单独在其表面，并且此外，可以在细磨的状态下每立方和单斜相的总量含有约5％或更少的单斜晶相。

公开(公告)号：US4328295A

公开(公告)日：1982-05-04

申请号：US231843

申请日：1981-02-05

申请人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： C04B35/48 ,  C04B35/486 ,  G01N27/407 ,  G01N27/409 ,  H01M8/12 ,  H01M6/18

CPC分类号： G01N27/4073 ,  C04B35/486 ,  H01M8/1253 ,  Y02E60/525 ,  Y02P70/56

摘要： A solid electrolyte for an oxygen concentration sensor is provided by mixing ZrO.sub.2 and about 7.5 to 8.5% by mol of a stabilizer such as Y.sub.2 O.sub.3, grinding the mixture to have a BET specific surface are of about 9 to 20 m.sup.2 /g, adding to the ground mixture a forming aid, forming the mixture into a predetermined configuration and firing the formed mixture at about 1420.degree. to 1520.degree. C. The electrolyte has a surface-average grain size of about 5 microns or less and a structure of a cubic phase alone at the surface thereof and even in a finely ground state.

摘要翻译： 通过将ZrO 2和约7.5〜8.5摩尔％的稳定剂如Y 2 O 3混合来提供氧浓度传感器的固体电解质，研磨该混合物以使BET比表面积为约9至20m 2 / g， 研磨混合物形成助剂，将混合物形成预定构型，并在约1420℃至1520℃下焙烧所形成的混合物。电解质的表面平均粒度为约5微米或更小，单独立方相的结构 在其表面，甚至在细磨的状态。

公开(公告)号：US4328296A

公开(公告)日：1982-05-04

申请号：US231844

申请日：1981-02-05

申请人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： C04B35/48 ,  C04B35/486 ,  G01N27/407 ,  G01N27/409 ,  H01M8/12 ,  H01M6/18

CPC分类号： G01N27/4073 ,  C04B35/486 ,  H01M8/1253 ,  Y02E60/525 ,  Y02P70/56

摘要： A solid electrolyte for an oxygen concentration sensor is provided by mixing ZrO.sub.2 and about 6.5 to 7% by mol of a stabilizer such as Y.sub.2 O.sub.3, grinding the mixture to give a BET specific surface area of about 9 to 20 m.sup.2 /g, adding to the ground mixture a forming aid, forming the mixture into a predetermined configuration and firing the formed mixture at about 1420.degree. to 1480.degree. C. The electrolyte has a surface-average grain size of about 5 microns or less and a structure of a cubic phase and a monoclinic and/or tetragonal phase at the surface thereof and, furthermore, may contain about 5% or less of a monoclinic phase per the total of the cubic and monoclinic phases, in a finely ground state.

摘要翻译： 通过将ZrO 2和约6.5〜7摩尔％的稳定剂如Y 2 O 3混合来提供氧浓度传感器的固体电解质，研磨该混合物，得到约9〜20m 2 / g的BET比表面积， 研磨混合物形成助剂，将混合物形成预定的构型，并在约1420℃至1480℃下焙烧所形成的混合物。电解质的表面平均粒度为约5微米或更小，立方相的结构和 在其表面具有单斜晶系和/或四方晶相，此外，在精细研磨状态下，每单位相和单斜相总共可含有约5％以下的单斜晶相。

公开(公告)号：US4362609A

公开(公告)日：1982-12-07

申请号：US246435

申请日：1981-03-23

申请人： Hiromi Sano ,  Masatoshi Suzuki ,  Masahiro Hamaya ,  Masami Ouki

发明人： Hiromi Sano ,  Masatoshi Suzuki ,  Masahiro Hamaya ,  Masami Ouki

IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/413 ,  G01N27/58

CPC分类号： G01N27/4077

摘要： An oxygen concentration sensor including a solid electrolyte member having two portions, one portion being exposed to a gas of interest and the other portion being exposed to the atmosphere, an inner cover formed with a first space communicating portion arranged to communicate with the other portion of the solid electrolyte member, and a water-proof cover enclosing the inner cover to define a ventilating passage between the inner cover and the water-proof cover and formed with a second space communicating portion maintaining the first space communicating portion of the inner cover in communication with the atmosphere through the ventilating passage. The second space communicating portion of the water-proof cover is axially spaced apart from the first space communicating portion of the inner cover by a predetermined distance. Also included is structure to prohibit the flow of water through said ventilating passage. The second space communicating portion is separated from this structure.

摘要翻译： 一种氧浓度传感器，包括具有两部分的固体电解质部件，一部分暴露于感兴趣的气体，另一部分暴露于大气中;内盖，形成有第一空间连通部分，其布置成与另一部分 所述固体电解质构件和防水盖包围所述内盖，以在所述内盖和所述防水罩之间形成通风通道，并形成有第二空间连通部，所述第二空间连通部保持所述内盖的所述第一空间连通部的连通 气氛通过通风通道。 防水罩的第二空间连通部分与内盖的第一空间连通部分轴向隔开预定距离。 还包括禁止水通过所述通风通道的结构。 第二空间连通部分与该结构分离。

公开(公告)号：US4313810A

公开(公告)日：1982-02-02

申请号：US53181

申请日：1979-06-27

申请人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： G01N27/409 ,  B01D53/86 ,  B01D53/94 ,  F23N5/00 ,  G01N27/406 ,  G01N27/407 ,  G01N27/413 ,  G01N27/58

CPC分类号： G01N27/407 ,  F23N5/006 ,  G01N27/4065

摘要： An oxygen concentration sensing apparatus in which a block of an oxygen-ion conductive solid electrolyte is interposed between a first electrode and a second electrode disposed opposite to each other. The first electrode is made of a catalytic metal and is exposed at a portion thereof on a surface of the solid electrolyte block, and an electrical insulating heat-resistive layer having a plurality of communication pores covers the exposed portion of the first electrode. The second electrode is porous and made of a catalytic metal. The solid electrolyte is wholly exposed to a stream of gases containing oxygen whose concentration is to be measured, and during measurement, a current source supplies continuously an electric current in a direction from the first electrode toward the second electrode. When the partial pressure of oxygen gas produced at the first electrode and existing in the vicinity thereof exceeds a predetermined value, the excess pressure portion of oxygen gas is discharged into the stream of gases through the communication pores of the heat-resistive layer thereby maintaining substantially constant the partial pressure of oxygen gas in the vicinity of the first electrode. An electromotive force representing the ratio between the partial pressure of oxygen around the first electrode and that in the stream of gases containing oxygen is measured to determine the concentration of oxygen contained in the gases.

摘要翻译： 一种氧浓度检测装置，其中氧离子传导性固体电解质块插入在彼此相对设置的第一电极和第二电极之间。 第一电极由催化金属制成，并在其一部分暴露在固体电解质块的表面上，具有多个连通孔的电绝缘耐热层覆盖第一电极的暴露部分。 第二电极是多孔的并由催化金属制成。 固体电解质完全暴露于含有浓度要测量的氧气的气流中，并且在测量期间，电流源在从第一电极朝向第二电极的方向上连续供给电流。 当在第一电极处产生的并且存在于其附近的氧气的分压超过预定值时，氧气的过量压力部分通过耐热层的连通孔排放到气流中，从而基本上保持 使第一电极附近的氧气的分压恒定。 测量表示第一电极周围的氧分压与含氧气体流之间的比率的电动势，以确定气体中所含的氧浓度。

公开(公告)号：US4220517A

公开(公告)日：1980-09-02

申请号：US24773

申请日：1979-03-28

申请人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

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

CPC分类号： G01N27/4075

摘要： In an oxygen concentration sensing apparatus comprising a solid, oxygen ion conductive, electrolyte and intervening between two electrodes to generate across the two electrodes a potential difference due to a difference in oxygen concentrations at the boundaries between the two electrodes and the solid electrolyte, one of the two electrodes is made of a metal performing catalytic action, one end portion of the one electrode is embedded in the solid electrolyte to be fixed thereby, the other end portion of the one electrode projects outwardly of the solid electrolyte, a portion of the one electrode contacting with an outer surface of the solid electrolyte is hermetically sealed with a nonconductive layer of a heat-resistant material, and the other electrode is made of a porous metal performing catalytic action and is disposed on the outer surface of the solid electrolyte but preventing the other electrode from being in contact with the one electrode.Further, the oxygen concentration sensing apparatus may be provided with an electric circuit for making an electric current flow intermittently from the one electrode through the solid electrolyte to the other electrode thereby to maintain the oxygen concentration at the boundary between the one electrode and the solid electrolyte at a constant level.

摘要翻译： 在包含固体，氧离子导电，电解质和介于两个电极之间的氧浓度感测装置中，在两个电极之间产生由于两个电极和固体电解质之间的边界处的氧浓度差异而产生的电位差， 两个电极由执行催化作用的金属制成，一个电极的一个端部嵌入固体电解质中以固定，一个电极的另一个端部突出于固体电解质的外部，一部分 与固体电解质的外表面接触的电极用耐热材料的非导电层气密密封，另一个电极由执行催化作用的多孔金属制成，并且设置在固体电解质的外表面上，但是防止 另一个电极与一个电极接触。 此外，氧浓度检测装置可以设置有用于使电流从一个电极通过固体电解质间歇地流动到另一个电极的电路，从而保持在一个电极和固体电解质之间的边界处的氧浓度 在一个恒定的水平。

公开(公告)号：US5660661A

公开(公告)日：1997-08-26

申请号：US462210

申请日：1995-06-05

申请人： Tomio Sugiyama ,  Masatoshi Suzuki ,  Hiromi Sano ,  Toshitaka Saito ,  Satoru Nomura

发明人： Tomio Sugiyama ,  Masatoshi Suzuki ,  Hiromi Sano ,  Toshitaka Saito ,  Satoru Nomura

IPC分类号： G01N27/406 ,  G01N27/407 ,  B32B9/00

CPC分类号： B32B18/00 ,  C04B35/119 ,  C04B35/486 ,  G01N27/4067 ,  G01N27/4071 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2237/343 ,  C04B2237/348 ,  C04B2237/68 ,  C04B2237/704

摘要： A measuring electrode and a reference plate are formed on the front and rear surfaces, respectively, of the electrolytic plate. The vent plate is provided with a vent channel. The heater base comprises a heating element. The electrolytic plate is made of a green sheet of zirconium oxide consisting of 5 to 7 molar % Y.sub.2 O.sub.3 and 0 to 5 parts by weight of aluminum oxide. The average particle diameter of the zirconium oxide powder is less than 2.0 .mu.m. The green sheet of zirconium oxide has a thickness of 50 to 300 .mu.m. The heater base is made of a green sheet of aluminum oxide consisting of aluminum oxide powder having an average particle diameter of less than 1.0 .mu.m and 0 to 10 parts by weight of zirconium oxide or yttria-stabilized zirconium oxide. The green sheet of aluminum oxide is at least 4 times the thickness of the green sheet of zirconium oxide. To complete the oxygen sensor, these four components are sintered together at 1300.degree. to 1600.degree. C. to be integrated.

摘要翻译： 测量电极和参考板分别形成在电解板的前表面和后表面上。 通风板设有排气通道。 加热器基座包括加热元件。 电解板由5〜7摩尔％的Y 2 O 3和0〜5重量份的氧化铝构成的氧化锆的生片构成。 氧化锆粉末的平均粒径小于2.0μm。 生坯的氧化锆片的厚度为50〜300μm。 加热器基座由平均粒径小于1.0μm的氧化铝粉末和氧化锆或氧化钇稳定的氧化锆为0〜10重量份的氧化铝生坯片构成。 氧化铝的生片是氧化锆生片的厚度的至少4倍。 为了完成氧传感器，将这四种组分在1300℃至1600℃下烧结在一起以进行整合。

公开(公告)号：US5707503A

公开(公告)日：1998-01-13

申请号：US549209

申请日：1995-10-27

申请人： Yasumichi Hotta ,  Hiromi Sano ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Naoto Miwa

发明人： Yasumichi Hotta ,  Hiromi Sano ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Naoto Miwa

IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4075

摘要： According to the present invention, an oxygen sensor element includes a solid electrolyte having a side surface at one side thereof, the side surface being contactable with a gas to be measured, a skeletal electrode provided on the side surface and having a plurality of pore portions, each of the pore portions passing through the skeletal electrode up to the solid electrolyte, and a reactive electrode made of a porous film and provided in each of the pore portions, a thickness of the porous film being smaller than that of said skeletal electrode. An area percentage (SH/SZ) which is a ratio of a total area (SH) of the reactive electrode to a total area (SZ) of the skeletal electrode and the reactive electrode is in a range from 10 to 50%, an average area (SA) of the pore portions is 100 .mu.m.sup.2 or less, a film thickness of the skeletal electrode is in a range from 1.5 to 4 .mu.m, and the film thickness of the reactive electrode is in a range from 0.6 to 1.5 .mu.m. The oxygen sensor element is superior in the heat resistance characteristics and the response characteristics.

摘要翻译： 根据本发明，氧传感器元件包括固体电解质，其一侧具有侧表面，侧表面可与待测气体接触，骨架电极设置在侧表面上并具有多个孔部分 每个孔部分通过骨架电极直到固体电解质，以及由多孔膜制成的反应性电极，并设置在每个孔部分中，多孔膜的厚度小于所述骨架电极的厚度。 作为骨架电极和反应性电极的反应电极的总面积（SH）与总面积（SZ）的比的面积百分比（SH / SZ）在10〜50％的范围内，平均 孔部的面积（SA）为100μm以下，骨架电极的膜厚在1.5〜4μm的范围内，反应电极的膜厚在0.6〜1.5μm的范围内 m。 氧传感器元件的耐热特性和响应特性优异。

公开(公告)号：US5472591A

公开(公告)日：1995-12-05

申请号：US305712

申请日：1994-09-14

申请人： Toshitaka Saito ,  Namitsugu Fujii ,  Yasumichi Hotta ,  Satoru Nomura ,  Hiromi Sano ,  Masatoshi Suzuki

发明人： Toshitaka Saito ,  Namitsugu Fujii ,  Yasumichi Hotta ,  Satoru Nomura ,  Hiromi Sano ,  Masatoshi Suzuki

IPC分类号： G01N27/409 ,  G01N27/407

CPC分类号： G01N27/4075

摘要： An oxygen concentration detector provides high durability by increasing the thermal stability of coating layers applied to an electrode face thereof. A catalyst layer is formed on an outer surface of an electrode at the analysis gas side of a partition wall made of an ion oxygen conductive ceramic for generating electromotive force according to the difference between the concentration of oxygen in the analysis gas and the concentration of oxygen in the reference gas. The catalyst layer is composed of heat resistant ceramic particles and a particulate metallic catalyst made of platinum, rhodium or the like, supported by the surface of the heat resistant ceramic particles. The catalyst layer is formed so that the catalyst is supported by the heat resistant support particles. The support particles are heat treated to grow to a particle size so that particle growth can be restrained when the support particles are exposed to the exhaust gas from an internal combustion engine. The outside of the electrode of the partition wall is covered with support particles having such heat treated large cohered catalyst particles, and good responsivity of the sensor is thereby maintained.

摘要翻译： 氧浓度检测器通过增加施加到其电极面上的涂层的热稳定性而提供高耐久性。 催化剂层形成在由离子氧传导陶瓷制成的分隔壁的分析气体侧的电极的外表面上，用于根据分析气体中的氧浓度与氧浓度之间的差产生电动势 在参考气体中。 催化剂层由耐热陶瓷颗粒和由耐热陶瓷颗粒的表面支撑的由铂，铑等制成的颗粒状金属催化剂组成。 催化剂层形成为使得催化剂被耐热支撑颗粒支撑。 支撑颗粒被热处理以生长成粒径，使得当载体颗粒暴露于来自内燃机的废气时，可以抑制颗粒生长。 分隔壁的电极的外侧覆盖有具有这种经热处理的大型粘结催化剂颗粒的支撑颗粒，从而保持传感器的良好的响应性。

公开(公告)号：US5421984A

公开(公告)日：1995-06-06

申请号：US184141

申请日：1994-01-21

申请人： Toshitaka Saito ,  Masatoshi Suzuki ,  Hiromi Sano ,  Tomio Sugiyama ,  Satoru Nomura

发明人： Toshitaka Saito ,  Masatoshi Suzuki ,  Hiromi Sano ,  Tomio Sugiyama ,  Satoru Nomura

IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4071 ,  G01N27/4075

摘要： This invention aims at providing an oxygen concentration sensor having electrodes which are excellent in heat resistance and durability and maintain quick response. An electrode 26 on an exhaust side is formed on one of the side surfaces of a solid electrolyte 25, and an electrode 24 on an atmosphere side is formed on the other side surface. The electrode 26 on the exhaust side has a composite structure comprising a skeletal electrode 26a and a reaction electrode 26a. The skeletal electrode 26a has a film thickness of 5 to 20 .mu.m and a porosity of less than 10%, and is a heat-resistant thick film for primarily forming a skeletal region. In contrast, the reaction electrode 26b has a film thickness of 0.5 to 2 .mu.m and a porosity of 10 to 50%, and is a high response thin film for primarily forming a reaction region.

摘要翻译： 本发明的目的在于提供一种具有耐热性和耐久性优异且保持快速反应的电极的氧浓度传感器。 在固体电解质25的一个侧面上形成排气侧的电极26，在另一个侧面上形成有气氛侧的电极24。 排气侧的电极26具有包括骨架电极26a和反应电极26a的复合结构体。 骨架电极26a的膜厚为5〜20μm，孔隙率小于10％，是用于主要形成骨架区域的耐热厚膜。 相反，反应电极26b的膜厚为0.5〜2μm，孔隙率为10〜50％，是用于主要形成反应区域的高反应性薄膜。