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1. 发明专利

JPS6048115B2 JPS6048115B2 - 失效
公开(公告)号：JPS6048115B2
公开(公告)日：1985-10-25
申请号：JP13719980
申请日：1980-09-30
申请人： Matsushita Electric Ind Co Ltd
发明人： OKINAKA YOICHI
IPC分类号： C04B33/26 , H01B3/00 , H01L41/257 , H01L41/39
CPC分类号： H01L41/43 , H01L41/1875
摘要： PURPOSE:To stabilize the fabrication of a piezoelectric ceramic substrate by a method wherein a green sheet of piezo-electric ceramics 30mu-300mu thick is laminated and baked by using ZrO2 powders with impurity of 95% or larger and with sizing of 2mu-7mu in particle diameter. CONSTITUTION:A green sheet is produced by adding an organic binder and a plastic agent to Pb(Mg1/3Nb2/3)O3-Pb TiO3-PbZrO3 powder, and then after cutting into a fixed shape, ZrO2 powder sized for 2mu-7mu particle diameter and having the impurity of 95% or larger as an inserting powder for reactive use is superimposed, and this chip is baked as determined. Thus, a ceramic substrate with thin plate, especially 100mu or less thick, is produced with high stability.

2. 发明专利

JPH09132462A METHOD FOR FIRING CERAMIC ELECTRONIC PARTS 失效
公开(公告)号：JPH09132462A
公开(公告)日：1997-05-20
申请号：JP29099595
申请日：1995-11-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IGUCHI TAKASHI , OKINAKA YOICHI , TANAHASHI MASAKAZU , IGAKI EMIKO
IPC分类号： C04B35/64
摘要： PROBLEM TO BE SOLVED: To provide a method for firing ceramic electronic parts by which the internal structural defect is suppressed and satisfactory electrical performance is maintained in the integral firing of the electronic parts of the laminate of Pd electrode and ceramic. SOLUTION: When the Pd electrode and ceramic are integrally fired, the firing is conducted in an inert gas in the temp. range where Pd is oxidized in the atmopshere. The inert gas is evacuated in the higher temp. range, the inert gas is replaced with oxygen or the atmospher, then firing is conducted in the atmosphere, hence the strain and stress due to the oxidation of Pd are eliminated, the deterioration of electrical performance of the ceramic resulting from the inert gas is suppressed, the internal structural defect is eliminated, and mass firing satisfying electrical performance is performed.

3. 发明专利

JPH11340076A PRODUCTION OF CERAMIC ELECTRONIC PARTS 失效
公开(公告)号：JPH11340076A
公开(公告)日：1999-12-10
申请号：JP14388498
申请日：1998-05-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKINAKA YOICHI , FUJIWARA HIROKI
IPC分类号： H01G4/12 , H01G4/30
摘要： PROBLEM TO BE SOLVED: To reduce adhesion of sintered bodies by treating in advance the same composition material as a cermic electronic part to be baked, at higher temperature than a normal baking temperature, crushing and adjusting it, mixing it with a binder made of the same composition as one for molding the ceramic electronic part, and using it as a material for preventing fusion. SOLUTION: A slurry of a dielectric powder made mainly of barium titanate and an organic binder is used to form a green sheet (sheet). Next, an internal electrode made mainly of Ni is deposited on the sheet surface. Then sheets each printed with the internal electrode are piled up by 70 layers in such a manner that the internal electrode is laminated with the sheet interposed, and an invalid layer in which only the sheet is piled up by ten layers is overlapped on both surfaces thereof, thereby forming a green laminated body. Then the green laminated body is cut into chips. Further, after a powder of the same composition as the sheet is baked temporarily at 1200-1400 deg.C, and its average grain size is adjusted to 20 μm, and a binder for green chip is added thereto so as to form a material for preventing fusion, and it is adhered to the chip and is baked thereafter.

4. 发明专利

JPH06151237A MANUFACTURE OF CERAMIC ELECTRONIC PART 失效
公开(公告)号：JPH06151237A
公开(公告)日：1994-05-31
申请号：JP29624892
申请日：1992-11-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAMOTO WATARU , IGAKI EMIKO , TANAHASHI MASAKAZU , IGUCHI TAKASHI , OKINAKA YOICHI
IPC分类号： C04B33/32 , C04B35/64 , H01G4/12 , H01G13/00
摘要： PURPOSE:To provide a firing method having high reproducibility by a method wherein, in a ceramic electronic part which can be obtained by integrally sintering Pd or a Pd alloy ceramic, the variation in various electric characteristics such as the defect in internal structure, generating from the quantity of treatment or method of treatment in the manufacture of the title ceramic electronic part, is suppressed. CONSTITUTION:An alloy electrode, which is composed of Pd or mainly composed of Pd, and ceramic are integrally sintered, Pd is fired in an atmosphere in which it is not oxidized in the temperature range where Pd is oxidized in the atmospheric air, and then it is transferred to the atmospheric air. After the complete burning of the residual C-component has been detected by a thermocouple 7 and the like, temperature is raised, ceramic is sintered, the generation of defect in the internal structure is suppressed, and an excellent electronic part, having uniform electric characteristics, can be manufactured in an excellent reproducible manner.

5. 发明专利

JPH09129481A MANUFACTURE OF LAMINATED CERAMIC ELECTRONIC COMPONENT 失效
公开(公告)号：JPH09129481A
公开(公告)日：1997-05-16
申请号：JP27879795
申请日：1995-10-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIRATE KOJI , IGUCHI TAKASHI , OKINAKA YOICHI
IPC分类号： C04B35/638 , H01G4/12 , H01G4/30
摘要： PROBLEM TO BE SOLVED: To enable a laminated ceramic electronic component to be protected against inner structural defects and enhanced in reliability by a method wherein a debinder process is carried out in a temperature rising stage in such an atmosphere that an electrode metal layer is not oxidized and then carried out in a temperature falling stage below such a temperature that the electrode metal layer is not oxidized in the air. SOLUTION: Electrode paste of Pd powder is printed on a ceramic green sheet, and ceramic layers and electrode metal layers are alternately laminated for the formation of a green chip. The green chips are put in an alumina sheath and subjected to a debinder process. A debinder process is carried out, in such an atmosphere that an electrode metal layer is not oxidized in a temperature rising stage and then carried out below such a temperature that the electrode metal layer is not oxidized in the air in a temperature falling stage. The amount of residual carbon in the chip ranges from 0.4 to 0.76wt%.

6. 发明专利

JPH07169644A MANUFACTURE OF CERAMIC ELECTRONIC COMPONENT 失效
公开(公告)号：JPH07169644A
公开(公告)日：1995-07-04
申请号：JP13495494
申请日：1994-05-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IGAKI EMIKO , SAKAMOTO WATARU , TANAHASHI MASAKAZU , IGUCHI TAKASHI , OKINAKA YOICHI , HIRATE KOJI
IPC分类号： C04B35/64 , H01G4/12
摘要： PURPOSE:To manufacture ceramic electronic components of the uniform and excellent performance even if the burning is conducted in a great quantitity at one time by avoiding the appearance of internal structural defects and the decline in electric characteristics such as a change with the passage of time, in a method for manufacturing a multilayer ceramic capacitor, etc., by sintering Pd or a Pd allay and ceramic into a body. CONSTITUTION:In a temperature range wherein Pd is oxidized in the air, the burning is conducted in an atmosphere wherein Pd is not oxidized. In temperatures above the one wherein Pd is oxidized in the air, atmospheric gas is converted into the air in temperatures above the one wherein PdO is discomposed into Pd in the air and then the atmospheric gas is converted into an oxygen atmosphere in a ceramic shrinkage temperature range. Or otherwise, in temperatures above the one wherein PdO is discomposed into Pd in an oxygen atmosphere, the atmospheric gas is converted into an oxygen atmosphere directly from the atmosphere wherein Pd is not oxidized. Then, the temperature is increased in the oxygen atmosphere and ceramic is sintered in such a circumstance. For the atmosphere wherein Pd is not oxidized, gas including carbon dioxide is used. When converting the atmospheric gas into the oxygen atmosphere, the pressure of the atmospheric gas is reduced first and then is converted into the oxygen atmosphere.

7. 发明专利

JPH06196355A MANUFACTURE CERAMIC ELECTRONIC COMPONENT 失效
公开(公告)号：JPH06196355A
公开(公告)日：1994-07-15
申请号：JP22854893
申请日：1993-09-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IGAKI EMIKO , TANAHASHI MASAKAZU , IGUCHI TAKASHI , OKINAKA YOICHI
IPC分类号： C01G55/00 , C04B35/64 , H01G4/12 , H01G4/30 , H01G13/00
摘要： PURPOSE:To restrict internal structure defects generated at manufacturing by a method wherein a body is burnt in the air not oxidizing Pd in a temperature range oxidizing Pd in the atmosphere, or a body is burnt in the atmosphere in a higher temperature range than that, when sintering the body. CONSTITUTION:A green sheet 2 composed of a dielectric powder of which a main component is barium titanate; and an organic binder is manufactured, and electrode paste using Pd as a metal component is printed to manufacture a green sheet comprising a valid layer 4. After removing binder of this green chip, it is burnt in N2 up to temperature range 900 deg.C oxidizing Pd in the atmosphere and it is burnt in the atmosphere from 900 deg.C to 1320 deg.C. Thus, distortion stress generated by oxidizing Pd can be obviated and an excellent ceramic electronic component not having internal structure defects can be obtained.

8. 发明专利

JPS63270372A PRODUCTION OF PIEZOELECTRIC CERAMIC BASE 失效
公开(公告)号：JPS63270372A
公开(公告)日：1988-11-08
申请号：JP10518787
申请日：1987-04-28
申请人： MATSUSHITA ELECTRIC IND CO LTD , NAKAGAWA SEISAKUSHO CO
发明人： OKINAKA YOICHI , ARAIDA JUNICHIRO , ISHIHAZAWA MASAMITSU , KIMURA MITSUHIRO
IPC分类号： C04B41/87 , C04B35/00
摘要： PURPOSE:To enable zirconium oxide powder to be coated uniformly on a ceramic green sheet even when it has a large surface area and a heavy weight, by roughening the bottom surface of the coater in coating the sheet with zirconium oxide particles by vibrating them on the bottom surface of the coater. CONSTITUTION:A specifically shaped ceramic green sheet and a zirconium oxide powder 22 are set in the coater 11 and mechanical vibrations are given to rub the sheet with the bottom surface of the coater. Thus, the sheet is charged with electricity on its surface and coated with the powder 22. At this time, the bottom surface 14 of the coater are roughened to form a plurality of projections 12 and depressions 13 and vibration becomes easy, even when the sheet is large and heavy, further excessive coating of the sheet can be avoided, because the excessive amount of the powder 22 remains in the bottom 14.

9. 发明专利

JPS63129076A MANUFACTURE OF PIEZOELECTRIC CERAMIC SUBSTRATE 失效
公开(公告)号：JPS63129076A
公开(公告)日：1988-06-01
申请号：JP27333486
申请日：1986-11-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKINAKA YOICHI
IPC分类号： C04B35/64 , H01L41/39

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