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公开(公告)号：EP0455879A3
公开(公告)日：1992-09-02
申请号：EP90124349.3
申请日：1990-12-15
CPC分类号： C01G3/006 , C01B13/185 , C01P2004/51 , C01P2004/61 , C01P2006/12 , Y10S505/737 , Y10S505/738
摘要： The invention process provides a metal oxide, or oxides of more than one more metal, wherein the oxides have a mean particle size less than 1 micron. The oxides are made by steps including (1) reacting an aqueous solution of a metal salt (or salts) that form insoluble carbonate(s), thereby to form a carbonate precipitate, followed by (b) recovering the precipitate, e.g., by filtration; (c) redispersing the precipitate in water to form a second very dilute slurry; (d) spray-drying said second slurry; (e) calcining the spray-dried product at a low temperature (e.g., 540°C), followed by a final calcination in atmosphere consisting of flowing oxygen initially under reduced pressure (e.g., 2 Torr). The spray-dried spheroids comprise particles having a mean particle size less than one micron, a property carried over into the products of both calcinations.
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2.发明公开Manufacturing method for ceramics and products thereof 失效Verfahren zur Herstellung von Keramik und Produkte daraus。
公开(公告)号：EP0355252A2
公开(公告)日：1990-02-28
申请号：EP89103557.8
申请日：1989-03-01
CPC分类号： B32B18/00 , C01B13/363 , C01G3/006 , C01G5/006 , C01G7/006 , C01G51/68 , C01P2002/34 , C01P2002/36 , C01P2002/54 , C01P2006/40 , C01P2006/80 , C04B35/4504 , C04B35/4508 , C04B2235/6567 , C04B2235/658 , C04B2237/34 , C04B2237/343 , H01L39/126 , H01L39/248 , Y10S505/738
摘要： An extremely pure oxide containing two or more metal, homogeneous at the atomic level, is prepared by (1) reacting in water, soluble salts of two or more metals with quaternary ammonium carbonate; the metals being those that form water-insoluble carbonates, thereby to precipitate mixed carbonates of the metals; (2) recovering and drying the precipitate; (3) calcining the precipitate to provide an oxide of mixed metals homogeneous at the atomic level and substantially free from extraneous contaminants. The calcined oxide can be shaped and compressed as greenware and sintered to form useful ceramic products.
摘要翻译： 通过（1）在水中，两种或更多种金属的可溶性盐与碳酸季铵反应制备含有两种或多种在原子水平上均匀的金属的极纯氧化物， 金属是形成水不溶性碳酸盐的金属，从而沉淀金属的混合碳酸盐; （2）回收和干燥沉淀物; （3）煅烧沉淀物以提供在原子级别均匀且基本上不含外来污染物的混合金属的氧化物。 煅烧氧化物可以成形并压缩成绿色软件并烧结形成有用的陶瓷产品。
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公开(公告)号：EP0387625A3
公开(公告)日：1991-04-17
申请号：EP90104053.5
申请日：1990-03-02
IPC分类号： H01L39/24
CPC分类号： H01L39/2477
摘要： Improved process for making Bi-Pb-Sb-Sr-Ca-Cu oxide superconductors. A solution of the nitrates of Bi, Pb, Sr, Ca, and Cu is reacted with a quaternary ammonium carbonate in a dispersion (heel) of Sb₂O₅. Carbonates of Bi, Pb, Sr, Ca, and Cu precipitate homogeneously on the Sb₂O₅ particles. Solids are recovered, dried, and heated to make a superconductor. The method minimizes handling toxic antimony compounds and reduces introduction of contaminants. Novel compositions result.
摘要翻译： 制备Bi-Pb-Sb-Sr-Ca-Cu氧化物超导体的改进方法。 将Bi，Pb，Sr，Ca和Cu的硝酸盐溶液与Sb2O5的分散体（鞋跟）中的碳酸季铵反应。 Bi，Pb，Sr，Ca和Cu的碳酸盐均匀地沉积在Sb2O5颗粒上。 将固体回收，干燥并加热以制成超导体。 该方法可减少处理有毒锑化合物并减少污染物的引入。 结果新颖。
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公开(公告)号：EP0350728A3
公开(公告)日：1990-11-28
申请号：EP89111931.5
申请日：1989-06-30
CPC分类号： H01S3/0388 , C04B35/01 , C25B11/04 , H01S3/0382
摘要： An extremely pure powder of an oxide of two or more metals, homogeneous at the atomic level, is shaped and compressed (for example, compacted by cold isostatic pressing) to provide greenware which is sintered to provide finished ceramic articles such as laser cathodes and electrodes for chlorine/caustic electrolysis. For example, pure mixed oxide powder consisting of La 0.7 Sr 0.3 CoO₃ is shaped to a tube, which is cold-isostatically pressed at 20,000 psi, then sintered to provide a cathode for a CO₂ laser. The starting oxides can be prepared by (1) reacting in water, soluble salts of two or more metals with quaternary ammonium carbonate; the metals being those that form water-insoluble carbonates, thereby to precipitate mixed carbonates of the metals; (2) recovering and drying the precipitate; and (3) calcining the precipitate to provide mixed metal oxides homogeneous at the atomic level and substantially free from extraneous contaminants.
摘要翻译： 两种或更多种在原子级均匀的金属的氧化物的非常纯的粉末被成型和压缩（例如通过冷等静压）压实），以提供烧结的生坯，以提供最终的陶瓷制品例如激光阴极和电极 用于氯/苛性电解。 例如，由La0.7Sr0.3CoO3组成的纯混合氧化物粉末成形为管，其以20,000psi冷等静压，然后烧结以提供用于CO 2激光器的阴极。 起始氧化物可以通过（1）在水中，两种或多种金属的可溶性盐与碳酸季铵反应来制备; 金属是形成水不溶性碳酸盐的金属，从而沉淀金属的混合碳酸盐; （2）回收和干燥沉淀物; 和（3）煅烧沉淀物以提供在原子级别均匀且基本上不含外来污染物的混合金属氧化物。
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公开(公告)号：EP0387625A2
公开(公告)日：1990-09-19
申请号：EP90104053.5
申请日：1990-03-02
IPC分类号： H01L39/24
CPC分类号： H01L39/2477
摘要： Improved process for making Bi-Pb-Sb-Sr-Ca-Cu oxide superconductors. A solution of the nitrates of Bi, Pb, Sr, Ca, and Cu is reacted with a quaternary ammonium carbonate in a dispersion (heel) of Sb₂O₅. Carbonates of Bi, Pb, Sr, Ca, and Cu precipitate homogeneously on the Sb₂O₅ particles. Solids are recovered, dried, and heated to make a superconductor. The method minimizes handling toxic antimony compounds and reduces introduction of contaminants. Novel compositions result.
摘要翻译： 制备Bi-Pb-Sb-Sr-Ca-Cu氧化物超导体的改进方法。 将Bi，Pb，Sr，Ca和Cu的硝酸盐溶液与Sb2O5的分散体（鞋跟）中的碳酸季铵反应。 Bi，Pb，Sr，Ca和Cu的碳酸盐均匀地沉积在Sb2O5颗粒上。 将固体回收，干燥并加热以制成超导体。 该方法可减少处理有毒锑化合物并减少污染物的引入。 结果新颖。
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6.发明公开Synthesis of submicron powders under reduced oxygen pressure 失效Synthese von submikroskopischen Pulvern unter reduziertem Sauerstoffdruck。
公开(公告)号：EP0455879A2
公开(公告)日：1991-11-13
申请号：EP90124349.3
申请日：1990-12-15
CPC分类号： C01G3/006 , C01B13/185 , C01P2004/51 , C01P2004/61 , C01P2006/12 , Y10S505/737 , Y10S505/738
摘要： The invention process provides a metal oxide, or oxides of more than one more metal, wherein the oxides have a mean particle size less than 1 micron. The oxides are made by steps including (1) reacting an aqueous solution of a metal salt (or salts) that form insoluble carbonate(s), thereby to form a carbonate precipitate, followed by (b) recovering the precipitate, e.g., by filtration; (c) redispersing the precipitate in water to form a second very dilute slurry; (d) spray-drying said second slurry; (e) calcining the spray-dried product at a low temperature (e.g., 540°C), followed by a final calcination in atmosphere consisting of flowing oxygen initially under reduced pressure (e.g., 2 Torr). The spray-dried spheroids comprise particles having a mean particle size less than one micron, a property carried over into the products of both calcinations.
摘要翻译： 本发明方法提供金属氧化物或多于一种以上金属的氧化物，其中氧化物具有小于1微米的平均粒度。 氧化物由以下步骤制成，包括（1）使形成不溶性碳酸酯的金属盐（或盐）的水溶液反应，从而形成碳酸盐沉淀，然后（b）回收沉淀物，例如通过过滤 ; （c）将沉淀物再分散在水中以形成第二非常稀的浆料; （d）喷雾干燥所述第二浆料; （e）在低温（例如540℃）下煅烧喷雾干燥产物，然后在最初在减压（例如2Torr）下由流动的氧气组成的气氛中进行最终的煅烧。 喷雾干燥的球体包括平均粒度小于1微米的颗粒，这两种煅烧产物的性质都被转移。
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公开(公告)号：EP0306974A3
公开(公告)日：1991-01-23
申请号：EP88114784.7
申请日：1988-09-09
CPC分类号： C04B35/4508 , H01L39/2419
摘要： Superior homogeneity in ceramic compositions is achieved by spray drying solutions of L.M.A. salts, suitably nitrates, where L is at least one metal of the rare earth groups including scandium and yttrium; M is Be, Mg, Ca, Sr, or Ba; and A is Cu, Ag, or Au. The spray dried particles are calcined (e.g., to Y.Ba₂.Cu₃ oxides), to provide superconducting metal oxide ceramic compositions.
摘要翻译： 陶瓷组合物的均匀性优于L.M.A.的喷雾干燥溶液。 盐，适当的硝酸盐，其中L是至少一种稀土元素的金属，包括钪和钇; M为Be，Mg，Ca，Sr或Ba; A是Cu，Ag或Au。 将喷雾干燥的颗粒煅烧（例如，以Y.Ba2.Cu3氧化物），以提供超导金属氧化物陶瓷组合物。
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公开(公告)号：EP0350728A2
公开(公告)日：1990-01-17
申请号：EP89111931.5
申请日：1989-06-30
CPC分类号： H01S3/0388 , C04B35/01 , C25B11/04 , H01S3/0382
摘要： An extremely pure powder of an oxide of two or more metals, homogeneous at the atomic level, is shaped and compressed (for example, compacted by cold isostatic pressing) to provide greenware which is sintered to provide finished ceramic articles such as laser cathodes and electrodes for chlorine/caustic electrolysis. For example, pure mixed oxide powder consisting of La 0.7 Sr 0.3 CoO₃ is shaped to a tube, which is cold-isostatically pressed at 20,000 psi, then sintered to provide a cathode for a CO₂ laser. The starting oxides can be prepared by (1) reacting in water, soluble salts of two or more metals with quaternary ammonium carbonate; the metals being those that form water-insoluble carbonates, thereby to precipitate mixed carbonates of the metals; (2) recovering and drying the precipitate; and (3) calcining the precipitate to provide mixed metal oxides homogeneous at the atomic level and substantially free from extraneous contaminants.
摘要翻译： 两种或更多种在原子级均匀的金属的氧化物的非常纯的粉末被成型和压缩（例如通过冷等静压）压实），以提供烧结的生坯，以提供最终的陶瓷制品例如激光阴极和电极 用于氯/苛性电解。 例如，由La0.7Sr0.3CoO3组成的纯混合氧化物粉末成形为管，其以20,000psi冷等静压，然后烧结以提供用于CO 2激光器的阴极。 起始氧化物可以通过（1）在水中，两种或多种金属的可溶性盐与碳酸季铵反应来制备; 金属是形成水不溶性碳酸盐的金属，从而沉淀金属的混合碳酸盐; （2）回收和干燥沉淀物; 和（3）煅烧沉淀物以提供在原子级别均匀且基本上不含外来污染物的混合金属氧化物。
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9.发明公开Novel processes and products involving yttrium-alkaline earth-bismuth-copper oxides 失效Verfahren und Produkte，enthaltend钇Erdalkali-Wismut-Kupfer-Oxyde。
公开(公告)号：EP0343455A2
公开(公告)日：1989-11-29
申请号：EP89108587.0
申请日：1989-05-12
CPC分类号： C01G3/006 , C01G5/006 , C01G7/006 , C01G29/006 , C01P2002/50 , C01P2002/72 , C01P2002/74 , C01P2002/77 , C01P2004/03 , C01P2004/61 , C01P2006/32 , C01P2006/40 , C04B35/4504 , C04B35/4521 , H01L39/125 , H01L39/126 , H01L39/2419 , H01L39/247 , Y10S505/738 , Y10S505/785
摘要： Two or more superconductors are reacted together to form a non-superconducting phase encapsulating a residual superconducting phase. For example YBa₂Cu₃ oxide is reacted with Bi₂Sr₂CaCu₂ oxide to form a superconducting product containing a novel non-superconducting oxide of Y, Bi, and Ba. A superconducting YBa₂Cu₃ oxide remains as an interconnected phase throughout the product. The new non-superconducting phase largely encapsulates and insulates the superconducting phase.
摘要翻译： 两个或更多个超导体一起反应以形成封装剩余超导相的非超导相。 例如，YBa2Cu3氧化物与Bi2Sr2CaCu2氧化物反应形成含有Y，Bi和Ba的新型非超导氧化物的超导产物。 超导YBa2Cu3氧化物在整个产品中保持为互连相。 新的非超导阶段主要封装并绝缘超导相。
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公开(公告)号：EP0306973A3
公开(公告)日：1990-08-16
申请号：EP88114783.9
申请日：1988-09-09
CPC分类号： C04B35/4504 , C01G3/006 , C01G5/006 , C01G7/006 , C01P2002/34 , C01P2002/54 , C01P2006/40 , C04B35/4508 , H01L39/126 , H01L39/2429 , H01L39/248
摘要： An extremely pure oxide containing two or more metals, homogeneous at the atomic level, is prepared by (1) reacting in water, soluble salts of two or more metals with quaternary ammonium carbonate; the metals being those that form water-insoluble carbonates, thereby to precipitate mixed carbonates of the metals; (2) recovering and drying the precipitate; (3) calcining the precipitate to provide an oxide of mixed metals homogeneous at the atomic level and substantially free from extraneous contaminants. The calcined oxide can be shaped and compressed as greenware and sintered to form useful ceramic products. For example a solution of nitrates of yttrium, barium, and copper are treated with a solution of tetraethyl ammonium carbonate to form co-precipitated carbonates of Y, Ba, Cu.
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