公开(公告)号：US07897135B2

公开(公告)日：2011-03-01

申请号：US11231450

申请日：2005-09-21

申请人： Karen S. Martirosyan ,  Dan Luss

发明人： Karen S. Martirosyan ,  Dan Luss

IPC分类号： C01G1/00 ,  C01G9/00 ,  C01G19/00 ,  C01G23/00 ,  C01G49/00 ,  C01G51/00

CPC分类号： C01G1/02 ,  C01B13/324 ,  C01B33/181 ,  C01B35/1027 ,  C01F17/0025 ,  C01G9/00 ,  C01G19/00 ,  C01G23/006 ,  C01G45/006 ,  C01G45/1264 ,  C01G49/0018 ,  C01G49/0027 ,  C01G49/0036 ,  C01G49/0054 ,  C01G49/009 ,  C01G51/00 ,  C01G53/006 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2006/42 ,  C09C1/0009

摘要： The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and/or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.

摘要翻译： 本发明一般涉及氧化物陶瓷复合材料的新型经济合成。 本发明的方法，称为碳燃烧合成氧化物（CCSO），是自蔓延高温合成（SHS）方法的改进，其中合成所需的热量是通过在氧气中燃烧碳而产生的 比纯金属。 这使得能够更经济地生产陶瓷材料并最小化产品中中间体金属氧化物的存在。 反应物混合物通常包含作为反应物的至少一种氧化物前体（例如，金属或非金属氧化物，或超氧化物，或氮化物，或碳酸盐，或氯化物，或草酸盐或卤化物），但不包括纯金属。 将石墨或烟灰形式的纯碳加入到反应混合物中以产生所需的热量（点火时）。 将混合物置于反应器中并暴露于气态氧气中。 碳和氧之间的高温放热反应以引起反应物之间的反应的传播温度波的形式产生自维持反应。 该反应在点燃之后迅速进行，并且最终产物包含存在于氧化物前体中的元素的简单和/或复合氧化物。 CCSO还能够合成不能通过常规SHS生产的氧化物，例如当纯金属是自燃的（例如Li或La）时，或者当其在室温下熔化时（例如Ga）或诸如燃烧热 金属相对较低。

公开(公告)号：US20060097419A1

公开(公告)日：2006-05-11

申请号：US11231450

申请日：2005-09-21

申请人： Karen Martirosyan ,  Dan Luss

发明人： Karen Martirosyan ,  Dan Luss

IPC分类号： B29C65/00

CPC分类号： C01G1/02 ,  C01B13/324 ,  C01B33/181 ,  C01B35/1027 ,  C01F17/0025 ,  C01G9/00 ,  C01G19/00 ,  C01G23/006 ,  C01G45/006 ,  C01G45/1264 ,  C01G49/0018 ,  C01G49/0027 ,  C01G49/0036 ,  C01G49/0054 ,  C01G49/009 ,  C01G51/00 ,  C01G53/006 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2006/42 ,  C09C1/0009

摘要： The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and/or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.

摘要翻译： 本发明一般涉及氧化物陶瓷复合材料的新型经济合成。 本发明的方法，称为碳燃烧合成氧化物（CCSO），是自蔓延高温合成（SHS）方法的改进，其中合成所需的热量是通过在氧气中燃烧碳而产生的 比纯金属。 这使得能够更经济地生产陶瓷材料并最小化产品中中间体金属氧化物的存在。 反应物混合物通常包含作为反应物的至少一种氧化物前体（例如，金属或非金属氧化物，或超氧化物，或氮化物，或碳酸盐，或氯化物，或草酸盐或卤化物），但不包括纯金属。 将石墨或烟灰形式的纯碳加入到反应混合物中以产生所需的热量（点火时）。 将混合物置于反应器中并暴露于气态氧气中。 碳和氧之间的高温放热反应以引起反应物之间的反应的传播温度波的形式产生自维持反应。 该反应在点燃之后迅速进行，并且最终产物包含存在于氧化物前体中的元素的简单和/或复合氧化物。 CCSO还能够合成不能通过常规SHS生产的氧化物，例如当纯金属是自燃的（例如Li或La）时，或者当其在室温下熔化时（例如Ga）或诸如燃烧热 金属相对较低。

公开(公告)号：US5290759A

公开(公告)日：1994-03-01

申请号：US864168

申请日：1992-04-03

申请人： J. T. Richardson ,  Dan Luss ,  D. Morgan ,  M. Maric

发明人： J. T. Richardson ,  Dan Luss ,  D. Morgan ,  M. Maric

IPC分类号： C01G3/00 ,  C01F17/00 ,  C01F11/04 ,  C01G3/02 ,  H01L39/12

CPC分类号： C01G3/006 ,  C01P2002/76 ,  C01P2002/88 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  Y10S505/736 ,  Y10S505/737 ,  Y10S505/738

摘要： Superconducting precursors, which can be made into metal oxide superconductors such as YBa.sub.2 Cu.sub.3 O.sub.6+x, and a process for their manufacture by the coprecipitation of 1-2-3 nitrates using inexpensive precipitating agents such as alkali hydroxides, carbonates and bicarbonates. The process involves preparing a stoichiometric mixture of Y, Ba and Cu nitrates, which is then combined with a solution containing an excess of NaOH/K.sub.2 CO.sub.3, KOH/K.sub.2 CO.sub.3, NaOH/Na.sub.2 CO.sub.3, or KOH/Na.sub.2 CO.sub.3, which causes the precipitation of the precursor. The suspension containing the precipitate is filtered and then washed wiThe invention of this application was made and conceived at least in part with United States Government support and the United States Government has certain rights in the invention.

摘要翻译： 可以制成金属氧化物超导体如YBa2Cu3O6 + x的超导前体，以及使用廉价的沉淀剂如碱金属氢氧化物，碳酸盐和碳酸氢盐共沉淀制备1-2-3硝酸盐的方法。 该方法包括制备Y，Ba和Cu硝酸盐的化学计量混合物，然后将其与含有过量的NaOH / K 2 CO 3，KOH / KCO 3，NaOH / Na 2 CO 3或KOH / Na 2 CO 3的溶液组合，其导致前体的沉淀 。 将含有沉淀物的悬浮液过滤，然后通过例如通过喷射引入的CO 2的存在将pH保持在7至9的值进行洗涤，这大大降低阳离子损失并通过胶溶沉淀改善洗涤。 过滤，洗涤和干燥后，通过在空气中加热焙烧干燥的前体，然后缓慢冷却以形成超导体。