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    • 2. 发明授权
    • Complex oxide having high thermoelectric conversion efficiency
    • 具有高热电转换效率的复合氧化物
    • US06544444B2
    • 2003-04-08
    • US09741607
    • 2000-12-19
    • Ryoji FunahashiIchiro MatsubaraSatoshi Sodeoka
    • Ryoji FunahashiIchiro MatsubaraSatoshi Sodeoka
    • H01B108
    • H01L35/18C03C3/122C03C3/15C03C4/14C03C10/00H01L35/14
    • This invention provides a complex oxide comprising the features of: (i) being represented by the formula: (A0.4B0.1M0.1)x/0.6Co2Oy wherein A and B are elements differing from each other, each represents Ca, Sr or Ba, M represents Bi, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb or Lu, 1.7≦x≦2, and 3.8≦y≦5, (ii) having a Seebeck coefficient of 100 &mgr;V/K or more at a temperature of 100 K (absolute temperature) or higher and (iii) having an electrical resistivity of 10 m&OHgr;cm or less at a temperature of 100 K (absolute temperature) or higher. The complex oxide of the invention is a material composed of low-toxicity elements existing in large amounts, the material having superior heat resistance and chemical durability and a high thermoelectric conversion efficiency in a temperature range of 600 K or higher which falls in the temperature range of waste heat.
    • 本发明提供一种复合氧化物,其包含以下特征:(i)由下式表示:(A0.4B0.1M0.1)x / 0.6Co2Oy其中A和B是彼此不同的元素,各自表示Ca,Sr或 Ba,M表示Bi,Sc,Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb或Lu,1.7 <= x <= 2,3.8 < = 5,(ii)在100K(绝对温度)以上的温度下具有100kV / K以上的塞贝克系数和(iii)在100K的温度下具有10mOMEGAcm以下的电阻率(绝对值) 温度)以上。 本发明的复合氧化物是由大量存在的低毒元素组成的材料,该材料具有优异的耐热性和化学耐久性,并且在600K以上的温度范围内具有较高的热电转换效率,其温度范围 的余热。
    • 3. 发明授权
    • Complex oxide having high thermoelectric conversion efficiency
    • 具有高热电转换效率的复合氧化物
    • US06727424B2
    • 2004-04-27
    • US10364807
    • 2003-02-11
    • Ryoji FunahashiIchiro MatsubaraSatoshi Sodeoka
    • Ryoji FunahashiIchiro MatsubaraSatoshi Sodeoka
    • H01L3500
    • H01L35/18C03C3/122C03C3/15C03C4/14C03C10/00H01L35/14
    • This invention provides a complex oxide comprising the features of : (i) being represented by the formula:(A0.4B0.1M0.1)x/0.6Co2Oy wherein A and B are elements differing from each other, each represents Ca, Sr or Ba, M represents Bi, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb or Lu, 1.7≦x≦2, and 3.8≦y≦5, (ii) having a Seebeck coefficient of 100 &mgr;V/K or more at a temperature of 100 K (absolute temperature) or higher and (iii) having an electrical resistivity of 10 m&OHgr;cm or less at a temperature of 100 K (absolute temperature) or higher. The complex oxide of the invention is a material composed of low-toxicity elements existing in large amounts, the material having superior heat resistance and chemical durability and a high thermoelectric conversion efficiency in a temperature range of 600 K or higher which falls in the temperature range of waste heat.
    • 本发明提供一种复合氧化物,其包含以下特征:(i)由下式表示:(A0.4B0.1M0.1)x / 0.6Co2Oy其中A和B是彼此不同的元素,各自表示Ca,Sr或 Ba,M表示Bi,Sc,Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb或Lu,1.7 <= x <= 2和3.8 < = 5,(ii)在100K(绝对温度)以上的温度下具有100kV / K以上的塞贝克系数和(iii)在100K的温度下具有10mOmegacm以下的电阻率(绝对值) 温度)以上。 本发明的复合氧化物是由大量存在的低毒元素组成的材料,该材料具有优异的耐热性和化学耐久性,并且在600K以上的温度范围内具有较高的热电转换效率,其温度范围 的余热。
    • 4. 发明授权
    • Method for production of superconducting oxide tape and superconducting
oxide tape produced thereby
    • 由此制造超导氧化物带和超导氧化物带的方法
    • US5999833A
    • 1999-12-07
    • US3460
    • 1998-01-06
    • Ryoji FunahashiIchiro MatsubaraKazuo UenoHiroshi Ishikawa
    • Ryoji FunahashiIchiro MatsubaraKazuo UenoHiroshi Ishikawa
    • C04B35/64C01G1/00C01G29/00H01B12/06H01B13/00H01L39/24H01L39/12
    • H01L39/248Y10S428/93Y10S505/704
    • A method for the production of a superconducting oxide tape having a Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10 (Bi-2223) structure interposed between silver sheets, which method consists essentially of preparing a sandwich structure having interposed between silver sheets a molded layer of a superconducting oxide precursor powder consisting essentially of Bi, Pb, Sr, Ca, Cu, and O obtained from a raw material substance composed of, in atomic composition ratio, 1.00 of Bi, 0-0.2 of Pb, 0.9-1.1 of Sr, 0.9-1.1 of Ca and 1.3-1.7 of Cu, and O, heating the sandwich structure in an atmosphere consisting of oxygen and an inert gas, having an oxygen partial pressure in the range of 0-5%, and kept at a temperature in the range of 830-850.degree. C., thereby melting the molded layer, then causing the atmosphere to retain the heating temperature and meanwhile increasing the oxygen partial pressure, thereby inducing precipitation of crystal grains possessing a Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8 (Bi-2212) structure and excelling in orientation, and subsequently maintaining the oxygen partial pressure and temperature at the time of precipitation of the crystal grains, thereby transforming the structure into the (Bi-2223) structure while retaining the particle diameter of the crystal grains and the state of orientation, and superconducting oxide tape produced by the method.
    • 一种用于生产具有介于银片之间的Bi2Sr2Ca2Cu3O10(Bi-2223)结构的超导氧化物带的方法,该方法主要包括制备夹层结构,该夹层结构介于银片之间,该层叠结构基本上由以下组成的超导氧化物前体粉末的模制层组成: Bi,Pb,Sr,Ca,Cu和O由原料组成比为1.00的Pb,0-0.2的Pb,0.9-1.1的Sr,0.9-1.1的Ca和1.3〜 1.7的Cu和O,在氧分压为0-5%的氧气和惰性气体的气氛中加热夹层结构,并保持在830-850℃的温度 ,从而熔化模制层,然后使气氛保持加热温度,同时增加氧分压,从而诱发具有Bi2Sr2CaCu2O8(Bi-2212)结构的晶粒沉淀,取向优良, 随后保持晶粒沉淀时的氧分压和温度,从而将结构转变为(Bi-2223)结构,同时保持晶粒的粒径和取向状态,并制成超导氧化物带 通过该方法。
    • 5. 发明授权
    • Method for producing single crystal of composite oxide
    • 复合氧化物单晶的制备方法
    • US06860938B2
    • 2005-03-01
    • US10481702
    • 2002-05-27
    • Ryoji FunahashiIchiro MatsubaraMasahiro Shikano
    • Ryoji FunahashiIchiro MatsubaraMasahiro Shikano
    • C30B1/02C30B1/04
    • C30B1/02C30B29/22C30B29/62
    • The present invention provides a method by which an oxide material having excellent thermoelectric conversion performance can be produced by a simple process. Specifically, the present invention provides a method for producing a composite oxide single crystal in which a mixture of raw substances including a Bi-containing substance, a Sr-containing substance, a Ca-containing substance, a Co-containing substance and a Te-containing substance, or a mixture of raw substances also including a Pb-containing substance in addition to the above-mentioned substances, is heated in an oxygen-containing atmosphere at a temperature below the melting point of any of the raw substances. The composite oxide single crystal produced by the method of the present invention is a ribbon-shaped fibrous single crystal that is about 10 to 10,000 μm long, about 20 to 200 μm wide, and about 1 to 5 μm thick. According to the method of the present invention, a composite oxide single crystal with excellent thermoelectric conversion performance can be produced simply by heating a mixture of raw substances at a relatively low temperature, below the melting point of any of the raw substances, meaning that a relatively easy and safe heat treatment operation can be performed, which contributes to cost reduction.
    • 本发明提供一种通过简单的方法可以生产具有优异的热电转换性能的氧化物材料的方法。 具体而言,本发明提供一种复合氧化物单晶的制造方法,其中,含有Bi的物质,含Sr物质,含Ca物质,含Co物质和Te- 除了上述物质之外还含有含Pb物质的含有物质或原料的混合物在含氧气氛中在低于任何原料的熔点的温度下加热。 通过本发明的方法制备的复合氧化物单晶是长度约10至10,000μm,宽度约20至200μm,厚度约1至5μm的带状纤维状单晶。 根据本发明的方法,可以简单地通过在低于任何原料的熔点的较低温度下加热原料混合物来产生具有优异热电转换性能的复合氧化物单晶,这意味着a 可以进行相对容易且安全的热处理操作,这有助于降低成本。