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    • 3. 发明专利
    • Oxygen concentration sensor
    • 氧气浓度传感器
    • JPS5748648A
    • 1982-03-20
    • JP12367780
    • 1980-09-06
    • Toyota Central Res & Dev Lab IncToyota Motor Corp
    • KAMIYA HIDEOSHINOHARA HIROSHIOOTSUKA YASUHIROSAJI KEIICHITAKEUCHI TAKASHI
    • G01N27/41G01N27/407
    • G01N27/4075
    • PURPOSE:To restrict the amount of oxygen contacting with a cathode and to lower the value of a thereshold electric current, by covering an electrode provided on both sides of an oxygen ion transmission body with a porous layer. CONSTITUTION:Heat-resistant electrode layers 2, 3 are formed on both sides of an oxygen ion transmission body 1 consisting of a solid electrolyte body formed a solid solution of ZrO2, HfO2 with a stabilizer such as CaO, MgO, Y2O3. The layers 2, 3 are covered by porous layers 4, 5 composed of a heat-resistant inorganic matter. The moving speed of oxygen is controlled by making the gas transmissivity of the layer 4 of a cathode 2 side smaller than that of the layer 5 of an anode 3 side. The gas transmissivity of the layers 4, 5 depends upon the diameter and density of fine holes and the thickness of the porous layer and 20-150mu thickness of the porous layer of the cathode 2 side and about 50:1-5,000:1 ratio of the layer thickness vs the diameter of the fine hole, are preferable. The gas transmissivity is enlarged by making the thickness of the layer 5 of the anode 3 side equal to or thinner than that of the layer 4 of the cathode 2 side or by enlarging the hole diameter.
    • 目的:通过用多孔层覆盖设置在氧离子传播体两侧的电极,限制与阴极接触的氧气量并降低阈值电流值。 构成:在由形成ZrO 2,HfO 2与CaO,MgO,Y 2 O 3等稳定剂的固溶体的固体电解质体构成的氧离子传播体1的两面上形成耐热电极层2,3。 层2,3由耐热无机物质构成的多孔层4,5覆盖。 通过使阴极2的层4的气体透过率比阳极3侧的层5的气体透过率更小来控制氧的移动速度。 层4,5的气体透过率取决于细孔的直径和密度以及多孔层的厚度和阴极2侧的多孔层的厚度为20-150μm,约50:1-5,000:1的比率 层厚相对于细孔的直径是优选的。 通过使阳极3的层5的厚度等于或小于阴极2侧的层4的厚度或通过扩大孔直径来扩大气体透过率。
    • 8. 发明专利
    • LAMINATION TYPE PIEZOELECTRIC ELEMENT
    • JPS6365687A
    • 1988-03-24
    • JP20801386
    • 1986-09-05
    • TOYOTA MOTOR CORP
    • KAMIYA HIDEO
    • H01L41/09H01L41/083
    • PURPOSE:To obtain an integral lamination type piezoelectric displacement element that is free from breakage by interposing a piezoelectric ceramic thin layer having coupling coefficient ratios between those of in the direction of thickness and in the direction of broadening that are more than 4.8 at an interface between an internal electrode layer and a piezoelectric ceramic layer. CONSTITUTION:An intermediate piezoelectric ceramic slurry having a large ratio of Kt/Kp (where Kt represents a coupling coefficient in the direction of thickness and Kp represents the coupling coefficient in the direction of broadening) of PbTiO3 and the like is coated at both upper and lower faces of a piezoelectric ceramic green sheet 1 such as PZT (lead zircotitanate) and others. After completing its coating, an internal electrode 2 is formed by printing a conductor paste on one side of the above green sheet 1. The prescribed sheets of the above sheet 1 are laminated and attached to the internal electrode using pressure and after that they are baked. On the other hand, a piezoelectric ceramic thin layer having a large ratio of Kt/Kp is formed at one side of the above piezoelectric ceramic green sheet 1 and after printing the conductor paste on the above ceramic thin layer, another piezoelectric ceramic, thin layer having a large ratio of Kt/Kp is formed on the printed paste. Then the prescribed sheets of the sheet 1 are laminated and pressed under pressure and they may be baked as well. These lamination type piezoelectric elements are composed of piezoelectric ceramic sheets 1, internal electrode layers 2, and interconnection leads 3.