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1.发明授权Oxygen concentration detector having heat-treated support layer providing high responsivity endurance 失效具有热处理支撑层的氧浓度检测器提供高响应能力
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。
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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。
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公开(公告)号：US5660661A
公开(公告)日：1997-08-26
申请号：US462210
申请日：1995-06-05
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。
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公开(公告)号：US5421984A
公开(公告)日：1995-06-06
申请号：US184141
申请日：1994-01-21
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。
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公开(公告)号：US5447618A
公开(公告)日：1995-09-05
申请号：US226551
申请日：1994-04-12
IPC分类号： G01N27/409 , G01N27/406 , G01N27/407 , G01N27/417 , H01L49/00 , G01N27/26
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。
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公开(公告)号：US5554839A
公开(公告)日：1996-09-10
申请号：US208786
申请日：1994-03-11
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。
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公开(公告)号：US4402820A
公开(公告)日：1983-09-06
申请号：US403045
申请日：1982-07-29
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％。
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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。
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公开(公告)号：US4328294A
公开(公告)日：1982-05-04
申请号：US231842
申请日：1981-02-05
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。
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公开(公告)号：US4220516A
公开(公告)日：1980-09-02
申请号：US1354
申请日：1979-01-04
申请人： Hiromi Sano , Masatoshi Suzuki
发明人： Hiromi Sano , Masatoshi Suzuki
IPC分类号： G01N27/409 , G01N27/407 , G01N27/58
CPC分类号： G01N27/4075
摘要： An oxygen sensor having an oxygen-ion-conductive element made of a metal oxide with an outer electrode composed of three layers, one of which is the thinnest, second of which is the intermediate in thickness and the third of which is the thickest. This oxygen sensor maintains quick response characteristics over a long period of time.
摘要翻译： 一种氧传感器，其具有由金属氧化物制成的氧离子传导元件，外部电极由三层组成，其中一层最薄，其中第二层为中间层，第三层最厚。 该氧传感器在长时间内保持快速响应特性。
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