摘要:
A honeycomb structure 100 has a plurality of flow paths 110a and 110b which are partitioned by partition walls 120 and are substantially parallel to each other; and one end of the flow path 110a is plugged by a plugging part 130 at one end surface 100a of the honeycomb structure 100, and one end of the flow path 110b is plugged by a plugging part 130 at the other end surface 100b of the honeycomb structure 100, wherein, in an image of the partition walls 120 obtained by X-ray CT measurement, when the number of communicating holes detected when resolution of the image is 1.5 μm/pixel is defined as X, and the number of communicating holes detected when resolution of the image is 2.5 μam/pixel is defined as Y, Y/X is 0.58 or more.
摘要:
A method of manufacturing a honeycomb structure comprises a step of forming a molded article by molding a raw material containing a ceramic powder and a pore-forming agent; and a step of manufacturing a honeycomb structure by sintering the molded article, wherein the pore-forming agent is powder formed of a material that disappears at a sintering temperature or less where the molded article is sintered, the powder is obtained by mixing a small particle size powder and a large particle size powder, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the small particle size powder is 50% is 5 to 20 μm, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 50% is 30 μm or more, and a ninety-percentage particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 90% is 80 μm or less.
摘要:
The production method of the present invention is a method for producing porous aluminum magnesium titanate by forming a mixture containing Al source powder, Mg source powder, Ti source powder and Si source powder as well as a pore-forming agent to obtain a molded body; presintering the obtained molded body; and then sintering the presintered molded body, wherein the content of the pore-forming agent to a total of 100 parts by mass for the Al source powder, Mg source powder, Ti source powder and Si source powder is 5 to 30 parts by mass, the melting point of the Si source powder is 600 to 1300° C., when the elemental composition ratio of Al, Mg, Ti and Si in the mixture is represented by compositional formula (1): Al2(1−x)MgxTi(1+x)O5+aAl2O3+bSiO2 (1), x satisfies 0.05≦x≦0.15, a satisfies 0≦a≦0.1 and b satisfies 0.05≦b≦0.15, and the presintered molded body is sintered at 1300 to 1560° C.
摘要翻译:本发明的制造方法是通过形成含有Al源粉末,Mg源粉末,Ti源粉末和Si源粉末以及成孔剂的混合物来制造多孔钛酸镁铝的方法,以获得成型体; 预先烧结所得成型体; 然后烧结预烧结成形体,其中对于Al源粉末,Mg源粉末,Ti源粉末和Si源粉末,造孔剂的含量总共为100质量份,为5〜30质量份, 当混合物中Al,Mg,Ti和Si的元素组成比由组成式(1)表示时,Si源粉末的熔点为600〜1300℃:Al 2(1-x)Mg x Ti + x)O5 + aAl2O3 + bSiO2(1),x满足0.05≦̸ x≦̸ 0.15,a满足0≦̸ a≦̸ 0.1和b满足0.05≦̸ b≦̸ 0.15,预烧结成型体在1300〜 C。
摘要:
The present invention is a process for producing an aluminum titanate-based ceramics comprising a step of firing a starting material mixture containing a titanium source powder, an aluminum source powder, and a copper source.
摘要:
The production method of the present invention is a method for producing porous aluminum magnesium titanate by forming a mixture containing Al source powder, Mg source powder, Ti source powder and Si source powder as well as a pore-forming agent to obtain a molded body; presintering the obtained molded body; and then sintering the presintered molded body, wherein the content of the pore-forming agent to a total of 100 parts by mass for the Al source powder, Mg source powder, Ti source powder and Si source powder is 5 to 30 parts by mass, the melting point of the Si source powder is 600 to 1300° C., when the elemental composition ratio of Al, Mg, Ti and Si in the mixture is represented by compositional formula (1): Al2(1−x)MgxTi(1+x)O5+aAl2O3+bSiO2 (1), x satisfies 0.05≦x≦0.15, a satisfies 0≦a≦0.1 and b satisfies 0.05≦b≦0.15, and the presintered molded body is sintered at 1300 to 1560° C.
摘要翻译:本发明的制造方法是通过形成含有Al源粉末,Mg源粉末,Ti源粉末和Si源粉末以及成孔剂的混合物来制造多孔钛酸镁铝的方法,以获得成型体; 预先烧结所得成型体; 然后烧结预烧结成形体,其中对于Al源粉末,Mg源粉末,Ti源粉末和Si源粉末,造孔剂的含量总共为100质量份,为5〜30质量份, 当混合物中Al,Mg,Ti和Si的元素组成比由组成式(1)表示时,Si源粉末的熔点为600〜1300℃:Al 2(1-x)Mg x Ti + x)O5 + aAl2O3 + bSiO2(1),x满足0.05≦̸ x≦̸ 0.15,a满足0≦̸ a≦̸ 0.1和b满足0.05≦̸ b≦̸ 0.15,预烧结成型体在1300〜 C。
摘要:
The present invention is a glass frit comprising 60 to 80% by weight of SiO2, 9 to 20% by weight of Al2O3, 3 to 12% by weight of K2O, and 3 to 12% by weight of Na2O, expressed on oxide basis.
摘要翻译:本发明是以氧化物为基准,含有60〜80重量%的SiO 2,9〜20重量%的Al 2 O 3,3〜12重量%的K 2 O,3〜12重量%的Na 2 O。
摘要:
The present invention is a process for producing an aluminum titanate ceramics, comprising firing a starting material mixture containing a titanium source powder and an aluminum source powder, wherein a content of niobium, expressed on the oxide basis, is not less than 0.2 parts by mass and not more than 2.5 parts by mass in 100 parts by mass of the starting material mixture.
摘要:
The invention is to provide a novel process for producing aluminum titanate-based ceramics having a low coefficient of thermal expansion. The invention is a process for producing an aluminum titanate-based ceramic comprising firing a starting material mixture containing a titanium source powder, an aluminum source powder and a silicon source powder, wherein the particle diameter corresponding to a cumulative percentage of 50% (D50) on a volume basis of the silicon source powder is not greater than 5 μm. The invention includes the process wherein the starting material mixture further contains a magnesium source powder.
摘要:
A core-shell structure comprises a core (2) comprising nanoparticles and a shell (4) coating the core (2), and its void space (3) formed by the core (2) and the shell (4) is controlled. A method of preparing the core-shell structure comprises: forming particles comprising a photoetchable semiconductor, metal or polymer and coating the particles with a shell (4) comprising a non-photoetchable semiconductor, metal or polymer, to form a core-shell structure (5); and irradiating the core-shell structure with a light having a controlled wavelength in the photoetching solution to form an adjustable void space inside a shell (3) within the core-shell structure by the size-selective photoetching method. The core-shell structure allows the preparation of a catalyst exhibiting an extremely high efficiency, and can be used as a precursor for preparing a nanomaterial required for a nanodevice.
摘要:
A core-shell structure comprises a core (2) comprising nanoparticles and a shell (4) coating the core (2), and its void space (3) formed by the core (2) and the shell (4) is controlled. A method of preparing the core-shell structure comprises: forming particles comprising a photoetchable semiconductor, metal or polymer and coating the particles with a shell (4) comprising a non-photoetchable semiconductor, metal or polymer, to form a core-shell structure (5); and irradiating the core-shell structure with a light having a controlled wavelength in the photoetching solution to form an adjustable void space inside a shell (3) within the core-shell structure by the size-selective photoetching method. The core-shell structure allows the preparation of a catalyst exhibiting an extremely high efficiency, and can be used as a precursor for preparing a nanomaterial required for a nanodevice.