摘要:
Disclosed is an organic-inorganic composite material obtained by chemically modifying a microorganism-derived ceramic material with an organic group, and a process for producing the organic-inorganic composite material. The process is characterized by reacting a microorganism-derived ceramic material with at least one compound selected from the group consisting of silane coupling agents represented by formula (1), silane coupling agents represented by formula (2), and titanate coupling agents represented by formula (3). The organic-inorganic complex can be used in applications for immobilized catalysts and immobilized enzyme catalysts.
摘要:
This invention relates to a magnetic ceramic material comprising, as main components, (a) at least one magnetic iron oxide selected from the group consisting of Fe3O4 and Υ-Fe2O3, and (b) an amorphous phase, and a process for producing a magnetic ceramic material, comprising (1) heating a microorganism-derived iron oxide ceramic material containing an iron atom, and (2) reducing the iron oxide ceramic material obtained in Step (1) by heating in the presence of hydrogen gas.
摘要翻译:本发明涉及一种磁性陶瓷材料,其包含作为主要成分的(a)至少一种选自Fe 3 O 4和& Ugr--Fe 2 O 3的磁性氧化铁,和(b)无定形相的制备方法, 磁性陶瓷材料,包括(1)加热含有铁原子的微生物来源的氧化铁陶瓷材料,和(2)通过在氢气存在下加热来还原步骤(1)中得到的氧化铁陶瓷材料。
摘要:
A SiC-hexagonal ferrite type ceramic composite electromagnetic wave absorber for a high-frequency band, the electromagnetic wave absorber characterized by being composed of a composite sintered product of a hexagonal ferrite and SiC. The electromagnetic wave absorber is produced by a method including the steps of incorporating 1 to 5 percent by weight of SiC powder or fiber into a hexagonal ferrite together with a sintering additive, followed by molding and, thereafter, conducting sintering at 700° C. to 900° C., or a method including the steps of incorporating 1 to 5 percent by weight of curing-treated SiC precursor into a hexagonal ferrite, followed by molding and, thereafter, conducting sintering.
摘要:
The present invention provides a Y-type hexagonal ferrite thin film suitable for high frequency devices, having a crystal structure with the c-axis oriented perpendicular to the surface of the thin film. The present invention also provides a method of producing the Y-type hexagonal ferrite thin film, comprising the steps of preparing a viscous solution containing a metal-organic complex which is formed using a primary component including a Fe+3 ion, and a secondary component including a Ba2+ ion, at least one transition metal ion selected from the group consisting of Fe2+, Co2+, Ni2+, Zn2+, Cu2+ and Mn2+; and optionally at least one metal ion selected from the group consisting of Sr2+, Ca2+ and Pb2+, forming a film having a Y-type ferrite composition on a surface made of noble metal through a coating process using the viscous solution, and burning the film at a temperature of 750° C. or more.
摘要:
A method of manufacturing aluminum-substituted hematite represented by α-(Fe1-xAlx)2O3 where x=0.01 to 0.15, by mixing an iron compound and an aluminum compound such that an atomic ratio of Fe to Al falls within the range of 99:1 to 85:15, adding citric acid and ethylene glycol to the mixture of the iron compound and aluminum compound to produce a gel, and pyrolyzing the gel, followed by calcining the pyrolyzed product.
摘要:
Disclosed is an organic-inorganic composite material obtained by chemically modifying a microorganism-derived ceramic material with an organic group, and a process for producing the organic-inorganic composite material. The process is characterized by reacting a microorganism-derived ceramic material with at least one compound selected from the group consisting of silane coupling agents represented by formula (1), silane coupling agents represented by formula (2), and titanate coupling agents represented by formula (3). The organic-inorganic complex can be used in applications for immobilized catalysts and immobilized enzyme catalysts.
摘要:
The present invention provides a Y-type hexagonal ferrite thin film suitable for high frequency devices, having a crystal structure with the c-axis oriented perpendicular to the surface of the thin film. The present invention also provides a method of producing the Y-type hexagonal ferrite thin film, comprising the steps of preparing a viscous solution containing a metal-organic complex which is formed using a primary component including a Fe+3 ion, and a secondary component including a Ba2+ ion, at least one transition metal ion selected from the group consisting of Fe2+, Co2+, Ni2+, Zn2+, Cu2+ and Mn2+; and optionally at least one metal ion selected from the group consisting of Sr2+, Ca2+ and Pb2+, forming a film having a Y-type ferrite composition on a surface made of noble metal through a coating process using the viscous solution, and burning the film at a temperature of 750° C. or more.
摘要:
This invention relates to a magnetic ceramic material comprising, as main components, (a) at least one magnetic iron oxide selected from the group consisting of Fe3O4 and γ-Fe2O3, and (b) an amorphous phase, and a process for producing a magnetic ceramic material, comprising (1) heating a microorganism-derived iron oxide ceramic material containing an iron atom, and (2) reducing the iron oxide ceramic material obtained in Step (1) by heating in the presence of hydrogen gas.
摘要翻译:本发明涉及一种磁性陶瓷材料,其主要成分为(a)至少一种选自Fe 3 O 4和γ-Fe 2 O 3的磁性氧化铁,和(b)非晶相,以及制备磁性的方法 陶瓷材料,其包括(1)加热含有铁原子的微生物来源的氧化铁陶瓷材料,和(2)通过在氢气存在下加热来还原步骤(1)中得到的氧化铁陶瓷材料。
摘要:
Disclosed is a microorganism that belongs to the genus Leptothrix and is capable of producing iron oxide that has a ferrihydrite or lepidocrocite structure and has a form of aggregates of ferrihydrite nanoparticles or lepidocrocite nanoparticles; a bacterium that is capable of producing an iron oxide that has a ferrihydrite or lepidocrocite structure and has a form of aggregates of ferrihydrite nanoparticles or lepidocrocite nanoparticles; a culture medium for use in screening a bacterium that is capable of producing a metal oxide; a method for screening a bacterium that is capable of producing a metal oxide; a culture medium for culturing a bacterium that is capable of producing a metal oxide; a method for culturing a bacterium that is capable of producing a metal oxide; a method for producing a metal oxide; and iron oxide.
摘要:
A capacitor includes a first capacitor element and a second capacitor element laminated on this first capacitor element. The first capacitor element is a solid electrolytic capacitor including a through-hole electrode penetrating a valve metal sheet and having one surface on which cathode and anode terminal portions are taken out. The second capacitor element has first and second electrodes which are provided via a dielectric layer, and second through-hole electrodes penetrating the dielectric layer. The second through-hole electrodes are coupled to the first electrode and insulated from the second electrode. Lead-out portions of the second electrodes are exposed from the dielectric layer. The second through-hole electrodes and the lead-out portions are disposed alternately. The first electrode is electrically coupled to the first through-hole electrode and the second electrode is electrically coupled to the valve metal sheet.