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1.发明授权Prevention of oxidation of carbonaceous and other materials at high temperatures 失效防止高温下碳质材料和其他材料的氧化公开(公告)号：US06455107B1
公开(公告)日：2002-09-24
申请号：US08640115
申请日：1996-04-30
IPC分类号： B05D136
CPC分类号： C04B41/507 , C04B41/5025 , C04B41/5062 , C04B41/52 , C04B41/87 , C04B41/89 , C25C3/08 , C25C3/085 , C25C3/125
摘要： A body of carbonaceous or other material for use in corrosive environments such as oxidising media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating which improves the resistance of the body to oxidation or corrosion and which may also enhance the bodies electrical conductivity and/or its electrochemical activity. The protective coating is applied in one or more layers from a colloidal slurry containing reactant or non-reactant substances, or a mixture of reactant and non-reactant substances, in particular mixtures containing silicon carbide and molybdenum silicide or silicon carbide and silicon nitride, which when the body is heated to a sufficient elevated temperature reaction sinter as a result of micropyretic reaction and/or sinter without reaction to form the protective coating.
摘要翻译： 用于腐蚀性环境（例如氧化介质或高温下的气态或液体腐蚀剂，特别是熔融盐如冰晶石）的碳质材料或其他材料的主体涂覆有保护性表面涂层，其将身体的抗性提高 氧化或腐蚀，并且还可以增强体的导电性和/或其电化学活性。 保护涂层从含有反应物或非反应物质的胶体浆料，或反应物和非反应物质的混合物，特别是含有碳化硅和硅化钼或碳化硅和氮化硅的混合物的混合物中施加在一层或多层中，其中 当由于微溶液反应和/或烧结而将体被加热到足够的高温反应烧结体而没有反应形成保护涂层时。
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2.发明授权
公开(公告)号：US6103091A
公开(公告)日：2000-08-15
申请号：US29485
申请日：1998-06-19
CPC分类号： C04B35/58064 , C04B35/58071 , C04B35/58078 , C04B41/009 , C04B41/5155 , C04B41/88 , C25C3/08
摘要： A method of producing a self-sustaining body of refractory boride from the group consisting of the borides of titanium, chromium, vanadium, zirconium, hafnium, niobium, tantalum, molybdenum and cerium. This body includes a refractory boride and a dried colloid from the group consisting of colloidal alumina, silica, yttria, ceria, thoria, magnesia, lithia, monoaluminium phosphate and cerium acetate and is obtained from a slurry of the refractory boride in one or more of said colloids by casting the slurry on a porous plaster layer, and drying the cast slurry by draining through the plaster, or by pressing/drying. Subsequently, the dried body is subjected to heat treatment to bond the refractory boride in the dried colloid. The bodies are useful as components of aluminium electrowinning cells.
摘要翻译： PCT No.PCT / IB96 / 00823 Sec。 371日期：1998年6月19日 102（e）1998年6月19日PCT PCT 1996年8月21日PCT公布。 出版物WO97 / 08114 日期1997年3月6日由钛，铬，钒，锆，铪，铌，钽，钼和铈组成的组中生产耐火硼化物的自持体的方法。 本体包括耐火硼化物和由胶态氧化铝，二氧化硅，氧化钇，二氧化铈，氧化钍，氧化镁，锂二氧化铈，氧化铝，磷酸铝和乙酸铈组成的组中的干燥胶体，并由耐火硼化物的浆料在一种或多种 所述胶体通过将浆料浇注在多孔石膏层上，并通过排出石膏或通过压制/干燥来干燥铸浆。 随后，将干燥的物体进行热处理以将耐火硼化物与干燥的胶体结合。 这些物体可用作铝电解池的组分。
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公开(公告)号：US5904828A
公开(公告)日：1999-05-18
申请号：US817246
申请日：1997-04-11
IPC分类号： C25C3/12
CPC分类号： C25C3/12
摘要： An anode for the electrowinning of aluminium by the electrolysis of alumina dissolved in a molten fluoride electrolyte comprises a porous combustion synthesis product of nickel, aluminium, iron, copper and optional doping elements in the amounts 50-90 wt. % nickel, 3-20 wt. % aluminium, 5-20 wt. % iron, 0-15 wt. % copper and 0-5 wt. % of one or more of chromium, manganese, titanium, molybdenum, cobalt, zirconium, niobium, tantalum, yttrium, cerium, oxygen, boron and nitrogen. The combustion synthesis product contains metallic and intermetallic phases. A composite oxide surface is produced in situ by anodic polarization of the porous combustion synthesis product in a molten fluoride electrolyte containing dissolved alumina. The in situ formed composite oxide surface comprises an iron-rich relatively dense outer portion, and an aluminate-rich relatively porous inner portion.
摘要翻译： PCT No.PCT / IB95 / 00801 Sec。 371日期1997年04月11日 102（e）日期1997年4月11日PCT提交1995年9月27日PCT公布。 公开号WO96 / 12833 日期1996年5月2日通过电解溶解在熔融氟化物电解质中的氧化铝电解铝的阳极包括镍，铝，铁，铜的多孔燃烧合成产物和50-90重量％的任选的掺杂元素。 ％镍，3-20重量％ ％铝，5-20wt。 ％铁，0-15重量％ ％铜和0-5重量％ 铬，锰，钛，钼，钴，锆，铌，钽，钇，铈，氧，硼和氮中的一种或多种的％。 燃烧合成产物含有金属和金属间相。 复合氧化物表面通过多孔燃烧合成产物在含有溶解的氧化铝的熔融氟化物电解液中的阳极极化原位产生。 原位形成的复合氧化物表面包含富含铁的相对致密的外部部分和富含铝酸盐的相对多孔的内部部分。
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4.发明授权
公开(公告)号：US5728466A
公开(公告)日：1998-03-17
申请号：US511907
申请日：1995-08-07
CPC分类号： C04B41/009 , C04B41/507 , C04B41/52 , C04B41/87 , C04B41/89 , C25C3/08 , C04B2111/00879 , Y10T428/252 , Y10T428/30
摘要： A cathode block of a cell for the electrowinning of aluminium comprises a carbon body having a hard and abrasion-resistant surface obtained by heating an applied layer of particulate refractory hard metal boride with a bonding material which when heated reacts with the refractory hard metal boride and with carbon. In particular a slurry of particulate refractory boride in colloidal alumina is dried and heated under an inert or a reducing atmosphere, formed by a bed of carbon powder, and reacted to form at least one stable compound between aluminium derived from colloidal alumina; boron and titanium derived from the titanium diboride; and carbon from the reducing atmosphere.
摘要翻译： 用于电解电解铝的电池的阴极块包括具有硬和耐磨表面的碳体，所述碳体通过用加热与难熔硬金属硼化物反应的接合材料加热颗粒耐火硬金属硼化物的施加层而获得， 与碳。 特别地，将粒状耐磨硼化物在胶态氧化铝中的浆料在惰性或还原气氛下干燥并加热，由碳粉末床形成，并在由胶体氧化铝得到的铝之间反应形成至少一种稳定的化合物; 衍生自二硼化钛的硼和钛; 和来自还原气氛的碳。
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公开(公告)号：US5558760A
公开(公告)日：1996-09-24
申请号：US369426
申请日：1995-01-06
申请人： Jainagesh A. Sekhar
发明人： Jainagesh A. Sekhar
CPC分类号： B22F3/114 , C04B38/0615 , C04B41/455 , B22F2998/00 , Y10S55/30
摘要： An improvement process for producing a coated porous ceramic, ceramic composite or metal structure, wherein the impregnation step is carried out by (a) fluidizing said slurry with steam or heated water and spraying said shape with said fluidized slurry or (b) heating said slurry so as to reduce its viscosity and spraying said shape with said reduced viscosity slurry. Manufacture of a single component which functions both as a filter and as a heating element, is made possible by the process of the present invention.
摘要翻译： 一种用于制造涂覆的多孔陶瓷，陶瓷复合材料或金属结构的改进方法，其中所述浸渍步骤通过（a）用蒸汽或加热的水流化所述浆料并用所述流化浆液喷洒所述形状或（b）加热所述浆料 以便降低其粘度并用所述比浓粘度的浆料喷洒所述形状。 通过本发明的方法可以制造兼作过滤器和加热元件的单个部件。
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6.发明授权
公开(公告)号：US5534119A
公开(公告)日：1996-07-09
申请号：US254289
申请日：1994-06-06
申请人： Jainagesh A. Sekhar
发明人： Jainagesh A. Sekhar
CPC分类号： C04B41/89 , C04B41/5025 , C04B41/5062 , C04B41/52 , C04B41/87 , C25C3/08 , C25C3/085 , C25C3/125
摘要： Carbon-containing components of cells for the production of aluminum by the electrolysis of alumina dissolved in a cryolite-based molten electrolyte are protected from erosion by non-chemical attack due to movement of liquid and/or gaseous components of the electrolyte, by a refractory boride coating applied from a slurry composed of pre-formed particulate refractory boride in a colloidal carrier which is dried and heated to consolidate the coating.
摘要翻译： 通过溶解在冰晶石基熔融电解液中的氧化铝的电解生产铝的电池的含碳组分被耐火材料的液体和/或气体组分的移动所引起的非化学侵蚀保护免受侵蚀 硼化物涂层由预先形成的颗粒耐火硼化物组成的浆料施加在胶体载体中，所述胶体载体被干燥和加热以固化涂层。
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公开(公告)号：US5514411A
公开(公告)日：1996-05-07
申请号：US320960
申请日：1994-10-12
摘要： A body of carbonaceous or other material for use in corrosive environments such as oxidising media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating which improves the resistance of the body to oxidation or corrosion and which may also enhance the bodies electrical conductivity and/or its electrochemical activity. The protective coating is applied in one or more layers from a colloidal slurry containing reactant or non-reactant substances, or a mixture of reactant and non-reactant substances, in particular mixtures containing silicon carbide and molybdenum silicide or silicon carbide and silicon nitride, which when the body is heated to a sufficient elevated temperature reaction sinter as a result of micropyretic reaction and/or sinter without reaction to form the protective coating.
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公开(公告)号：US5484568A
公开(公告)日：1996-01-16
申请号：US176773
申请日：1994-01-03
申请人： Jainagesh A. Sekhar , Naiping Zhu
发明人： Jainagesh A. Sekhar , Naiping Zhu
CPC分类号： H05B3/12 , C04B35/565 , C04B35/58092 , C04B35/62665 , C04B35/6342 , C04B35/6365 , C04B35/651 , C04B41/009 , C04B41/5089 , C04B41/5092 , C04B41/85 , C22C1/058 , C04B2111/00844 , C04B2235/3206 , C04B2235/3217 , C04B2235/3225 , C04B2235/3241 , C04B2235/3244 , C04B2235/3256 , C04B2235/3418 , C04B2235/349 , C04B2235/3826 , C04B2235/3865 , C04B2235/3873 , C04B2235/3891 , C04B2235/402 , C04B2235/404 , C04B2235/421 , C04B2235/428 , C04B2235/5436 , C04B2235/606 , C04B2235/80 , C04B2235/9684 , Y10S75/959
摘要： Electrical heating elements and related articles having oxidation resistance at high temperatures, produced by a method involving micropyretic synthesis. A composition subjected to micropyretic synthesis comprises a filler material, a reactive system capable of undergoing micropyretic synthesis, and (optionally) a plasticizer or extrusion agent. The method of preparation of articles includes slurry techniques, plastic extrusion, slip casting, or coating.
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公开(公告)号：US5413689A
公开(公告)日：1995-05-09
申请号：US897726
申请日：1992-06-12
CPC分类号： C04B35/645 , C04B35/528 , C04B37/005 , C04B37/006 , C25C3/08 , C25C3/125 , C04B2235/6587 , C04B2237/086 , C04B2237/09 , C04B2237/121 , C04B2237/363 , C04B2237/385
摘要： A carbon containing paste for use in particular as components of electrolytic cells as such or compacted to form anodes, cathodes and cell linings of cells for the electrolysis of alumina for the production of aluminium, consists of a compact mixture of one or more particulate carbonaceous material(s) with a non-carbonaceous non-polluting binder and optionally with one or more fillers, the binder being a suspension of one or more colloids such as colloidal silica, alumina, yttria, ceria, thoria, zirconia, magnesia, lithia or being derived from one or more colloid precursors or colloid reagents optionally with one or more chelating agents. Cell components are produced by forming the paste to a desired shape and size, for instance in a mold, an injection die or in a cell bottom, compacting and drying before use, or the paste can be used as such like in a Soderberg type anode, or for bonding together carbon blocks like a ramming paste.
摘要翻译： 用于特别是作为电解槽的组分的碳含量糊料或压制形成用于生产铝的电解氧化铝的阳极，阴极和电池的电池衬垫由一种或多种颗粒状碳质材料的紧密混合物组成 具有非碳质无污染的粘合剂和任选的一种或多种填料，所述粘合剂是一种或多种胶体如胶体二氧化硅，氧化铝，氧化钇，二氧化铈，氧化钍，氧化锆，氧化镁，锂离子的悬浮液或 衍生自一种或多种胶体前体或任选与一种或多种螯合剂的胶体试剂。 通过将糊剂形成所需的形状和尺寸，例如在模具，注射模具或细胞底部，在使用前压实和干燥，或者可以像Soderberg型阳极那样使用糊料来生产细胞组分 或用于将碳块粘结在一起，如捣碎膏。
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10.发明授权Combustible slurry for joining metallic or ceramic surfaces or for coating metallic, ceramic and refractory surfaces 失效用于连接金属或陶瓷表面或用于涂覆金属，陶瓷和耐火表面的可燃浆料
公开(公告)号：US5376421A
公开(公告)日：1994-12-27
申请号：US981504
申请日：1992-11-25
CPC分类号： B23K35/34 , B23K35/025 , C04B37/005 , C04B37/006 , B23K35/327 , C04B2235/5436 , C04B2237/064 , C04B2237/068 , C04B2237/09 , C04B2237/121 , C04B2237/122 , C04B2237/123 , C04B2237/126 , C04B2237/127 , C04B2237/32
摘要： A slurry for joining metallic or ceramic surfaces or for coating metallic or ceramic and refractory surfaces, comprising a liquid suspending medium and at least two constituents in particulate form suspended in the medium, the constituents being so selected and proportioned as to undergo combustion synthesis when ignited. A method for coating or joining metallic or ceramic surfaces comprises applying such a slurry to a surface to be coated or to surfaces to be joined, and igniting the slurry to cause combustion synthesis.
摘要翻译： 一种用于接合金属或陶瓷表面或用于涂覆金属或陶瓷和耐火表面的浆料，包括液体悬浮介质和悬浮在介质中的至少两种颗粒形式的组分，组分如此选择和成比例以在点燃时进行燃烧合成 。 用于涂覆或接合金属或陶瓷表面的方法包括将这样的浆料施加到待涂覆的表面或待连接的表面上，并点燃浆料以引起燃烧合成。
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