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1. 发明专利

JPS63292506A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63292506A
公开(公告)日：1988-11-29
申请号：JP12721187
申请日：1987-05-26
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： OYA NOBUYUKI , SAWAKE TOSHIKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/00 , C04B35/64 , H01B3/00 , H01P11/00
摘要： PURPOSE:To make it possible to easily obtain an excellent property by mixing and temporarily baking by a dry method using denatured oxide powder made by a wet method so as to make into material powder which has composition same as the desired ceramics. CONSTITUTION:In the manufacture of dielectric resonator material of perovskite composition where the chemical formula is shown as Ba(Zn1/3Me2/3)O3, with Me as a metallic element of valence 5, a solution which contains Zn and a proper amount of metallic component of at least one kind except Zn in the chemical formula or a solution which contains Ba and a proper amount of metallic component of at least one kind except Ba in the chemical formula is prepared. Next, a sol is generated by hydrolysis, and the sol is calcined after drying at 700-1300 deg.C into a calcined substance. The calcined substance and compound of the remaining constituent components of the perovskite composition are mixed and baked temporarily at 700-1300 deg.C into temporary baked powder and then this temporary baked powder is made into a form and baked at 1200-1700 deg.C. Hereby perovskite composition material powder with diameter in the submicron range can be easily obtained.

2. 发明专利

JPS63298911A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63298911A
公开(公告)日：1988-12-06
申请号：JP13220387
申请日：1987-05-28
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： SAWAKE TOSHIKI , OYA NOBUYUKI , SHIRASAKI SHINICHI
IPC分类号： H01B3/00 , H01P11/00
摘要： PURPOSE:To obtain a dielectric resonator material of a dense composition and a high Q value in baking up at a low temperature, by making a submicron level of (Ba, Sr, Ca) (Zr, Ti)O3 type powder with a good dispersion property, and mixing it in a dry method to form a desired composite material. CONSTITUTION:An adequate amount of a water solution or an alcohol solution of a Zr compound such as Zr oxychloride, and an adequate amount of water solution or an alcohol solution of a compound including necessary amount of component other than Zr are mixed. And a precipitator solution including ammonia, oxine, or the like as a reagent is mixed to produce a coprecipitated substance, and it is baked temporarily at 700 to 1300 deg.C after drying. Then, compounds of the remaining component for the object substance, and an oxide of Mn, Cr, Co, W, or the like are added, and baked temporarily at 700 to 1600 deg.C. After that the temporarily baked powder is formed and baked up at 700 to 1600 deg.C to make a dielectric resonator material which consists of BaxSryCa1-x-y (ZrzTi1-z)O3 (0

3. 发明专利

JPS63292509A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63292509A
公开(公告)日：1988-11-29
申请号：JP12721487
申请日：1987-05-26
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： SAWAKE TOSHIKI , OYA NOBUYUKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/46 , C04B35/64 , H01B3/00 , H01P11/00
摘要： PURPOSE:To make it possible to easily obtain an excellent property by mixing and temporarily baking by a dry method using denatured material made by a wet method so as to make into material powder which has a composition same as the desired ceramics. CONSTITUTION:In the manufacture of dielectric resonator material of the composition whose chemical formula is shown as (1-x)BaO.xTiO2, 0.75

4. 发明专利

JPS63291306A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63291306A
公开(公告)日：1988-11-29
申请号：JP12537387
申请日：1987-05-22
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： OYA NOBUYUKI , SAWAKE TOSHIKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/00 , C04B35/64 , H01B3/00 , H01P11/00
摘要： PURPOSE:To secure such a material that is high in Q-value by using Ba(Zn1/3 Me2/3)O3 system ceramics (Me is either of Nb and Ta) for dielectric resonator material, forming this into modified material powder of a submicron grade, and mixing another material powder in this powder, then sintering it. CONSTITUTION:When Ba(Zn1/3Me2/3)O3 system ceramics are manufactured, it is performed by dividing the process into three parts ranging from first to third ones. At the first process, a mixed solution consisting of at least one component other than Ba and Ba solution and another mixed solution consisting of at least one component other than Zn and a Zn solution both are produced, setting these solutions down to a coprecipitating material, and after being dried up, it is calcined at a temperature of 700-1300 deg.C. Here, another component is a small amount of sintering assistant for which Zr, Mg, Sc, Hf, Th or the like are used. At the second process, powder of the previously obtained calcined material and the remaining component of the target perovskite composition are mixed together and calcined at a temperature of 700-1300 deg.C. At the next third process, the obtained calcined material is molded and completely baked at a temperature of 1200-1700 deg.C.

5. 发明专利

JPS63156056A MANUFACTURE OF HIGH PERMITTIVITY CERAMICS 失效
公开(公告)号：JPS63156056A
公开(公告)日：1988-06-29
申请号：JP30089586
申请日：1986-12-17
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： SAWAKE TOSHIKI , OYA NOBUYUKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/00 , H01B3/12 , H01G4/12

6. 发明专利

JPS63152816A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63152816A
公开(公告)日：1988-06-25
申请号：JP30089686
申请日：1986-12-17
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： OYA NOBUYUKI , SAWAKE TOSHIKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/49 , H01B3/00 , H01B3/12

7. 发明专利

JPS63296325A MANUFACTURE OF SEMICONDUCTOR CAPACITOR MATERIAL 失效
公开(公告)号：JPS63296325A
公开(公告)日：1988-12-02
申请号：JP13220187
申请日：1987-05-28
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： SAWAKE TOSHIKI , OYA NOBUYUKI , SHIRASAKI SHINICHI
IPC分类号： H01G4/12 , H01B3/00
摘要： PURPOSE:To increase the capacitance of a grain boundary layer insulated type semiconductor capacitor and reduce the dispersion of capacitance by preparing SrTiO3 group raw material powder having excellent dispersibility in a submicron class and manufacturing a desired composition raw material by mixing through a mere dry method by using the powder. CONSTITUTION:Either of the mixed liquid of a proper quantity of at least one component except Sr and a proper quantity of an Sr solution or the mixed liquid of a proper quantity of at least one component except Ti and a proper quantity of a Ti solution is prepared, the mixed liquid and a precipitate forming liquid are mixed to form a co-precipitate, and the co-precipitate is dried and calcined at 600-1200 deg.C. A calcined body acquired and the compound of residual ingredients having an aimed composition are mixed, and calcined at 700-1300 deg.C and molded, or molded and calcined. A molded form obtained is baked in a reducing atmosphere at 1300-1600 deg.C, thus shaping a semiconductor element material. Accordingly, sintered body particles, which have large diameters and are arranged in monodispersion, can be acquired simply, thus increasing the capacitance of a grain boundary layer insulated type semiconductor capacitor and reducing the dispersion of capacitance thereof.

8. 发明专利

JPS63292614A MANUFACTURE OF GRAIN BOUNDARY LAYER TYPE SEMICONDUCTOR CERAMICS CAPACITOR 失效
公开(公告)号：JPS63292614A
公开(公告)日：1988-11-29
申请号：JP12721587
申请日：1987-05-26
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： SAWAKE TOSHIKI , OYA NOBUYUKI , SHIRASAKI SHINICHI
IPC分类号： H01B3/12 , H01G4/12
摘要： PURPOSE:To obtain a ceramics capacitor enabling firing at a relatively low temperature and having large capacity with small dispersion of capacity, by making an SrTiO3 system of denatured oxide raw material powder of a submicron order having good dispersibility in grain diameter control for making this powder into a composite raw material by mixing this powder. CONSTITUTION:A solution which contains a proper quantity of at least one kind of metallic components except Sr or Ti of the chemical formula expressed by Sr1-x-yBaxGayTiO3 and Sr or Ti is made. Next, this solution is hydrolyzed to generate a sol and this sol is dried and temporarily fired at 600-1200 deg.C to be made into a calcined substance. As a result, denatured powder of a submicron order, for instance, SrTiO3 powder is obtained as the calcined substance, and this denatured powder has extremely good dispersion so as to be hard to generate cohesion of grains. Subsequently, this temporary-fired substance and a compound of the remaining constitutive components of perovskite structure are mixed to be temporary-fired at 700-1300 deg.C for being made into calcined powder. The calcined powder is fired in a reducing atmosphere of 1300-1600 deg.C to be made into a ceramic. Ti, Mn, Fe, Co, Ni, Cu, B, Pb, Bi, La, Pr and Tm are diffused in a grain boundary at 800-1300 deg.C to obtain the intended ceramic capacitor.

9. 发明专利

JPS63291305A MANUFACTURE OF DIELECTRIC RESONATOR MATERIAL 失效
公开(公告)号：JPS63291305A
公开(公告)日：1988-11-29
申请号：JP12537287
申请日：1987-05-22
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： OYA NOBUYUKI , SAWAKE TOSHIKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/00 , C04B35/495 , C04B35/64 , H01B3/00 , H01P11/00
摘要： PURPOSE:To secure such a material that is high in Q value by using Ba(Zn1/3 Nbx/3Ta(1-x)/3)O3 system ceramics for dielectric resonator material, forming the ceramics into modified material powder of a submicron grade, and mixing another material powder in this, then burning it. CONSTITUTION:When Ba(Zn1/3Nbx/3Ta(1-x)/3)O3 system ceramics are manufactured, it is performed by dividing the process into three parts ranging from first to third ones. At the first process, a mixed solution consisting of at least one component other than Zn and a Zn solution, a mixed solution consisting of at least one component other than Ba and Ba solution and a mixed solution consisting of at least one component other than Nb and an Nb solution are all produced, setting these solutions down to a coprecipitating body each, and after being dried up, it is calcined at a temperature of 700-1300 deg.C. Here, another component is a small amount of sintering assistant for which Zr, Mg, Sc, Hf or the like are used. Next, at the second process, powder of the obtained calcined material and powder of the remaining component of the target perovskite composition are mixed and calcined at a temperature of 700-1300 deg.C. At the next third process, powder of the obtained calcined material is molded and completely baked at a temperature of 1200-1700 deg.C.

10. 发明专利

JPS63153871A MANUFACTURE OF MATERIAL FOR DIELECTRIC RESONATOR 失效
公开(公告)号：JPS63153871A
公开(公告)日：1988-06-27
申请号：JP30089786
申请日：1986-12-17
申请人： NIPPON DENSO CO , NAT INST RES INORGANIC MAT
发明人： OYA NOBUYUKI , SAWAKE TOSHIKI , SHIRASAKI SHINICHI
IPC分类号： C04B35/49 , H01B3/00 , H01B3/12 , H01L41/39
摘要： PURPOSE:To obtain a (Zr, Sn) TiO4 ceramics which is minute, has a high dielectric constant and has a specially high Q value by a method wherein the mixed solution of at least one component other than Zr and Zr solution is hydrolyzed, the powder calcinated after drying and the powder containing the residual component of the purposed composition are mixed to calcinate and the obtained calcinated material powder is molded and calcined. CONSTITUTION:In manufacture of a (ZrxSn1-x) TiO4 ceramics, first the mixed solution of at least one component other than Zr and Zr solution is produced as the first step, hydrolyzed and calcinated after drying. The obtained calcinated material powder and the powder containing the residual component of the purposed composition are mixed, and the mixture is calcinated, molded and calcined. In the first step, such aqueous solution as zirconium oxychloride or alcohol solution is used as the Zr solution, Sn solution and Ti solution. The molar ratio of (ZrxSn1-x) to Ti is set at 1.0 or at a value approximated to that.

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