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公开(公告)号：US5776369A
公开(公告)日：1998-07-07
申请号：US639250
申请日：1996-04-22
申请人： B. Troy Dover , Conrad W. Kamienski , Robert C. Morrison , R. Thomas Currin, Jr. , James A. Schwindeman
发明人： B. Troy Dover , Conrad W. Kamienski , Robert C. Morrison , R. Thomas Currin, Jr. , James A. Schwindeman
CPC分类号： C01D7/00 , B01J13/0086 , B22F1/0088 , B22F9/06 , C01D15/08 , Y10S516/926 , Y10S516/928 , Y10T428/2991
摘要： A process for producing dispersions of atmospherically stable, coated alkali metal particles and atmospherically stable, coated alkali metal powders by agitating a mixture of molten alkali metal in a hydrocarbon oil at dispersion speeds, optionally in the presence of a dispersing agent, contacting the molten alkali metal-hydrocarbon oil dispersion, above or below the surface of the dispersion, with up to 3 weight percent anhydrous carbon dioxide while agitating the dispersion for at least 1 minute. The dispersion in oil can be used directly in chemical reactions. The bulk of the oil can be removed from the dispersions to produce oil wet particles, the oil wet particles can be washed with a low boiling hydrocarbon to produce hydrocarbon wet particles which can be dried to produce atmospherically stable powders of coated metal particle The dispersed particles in oil, the oil wet particles, the hydrocarbon wet particles and the atmospherically stable powders can each be used in chemical reactions. After washing and drying, the process produces lithium powders having a surface coating composition containing 0.1-0.3 atom percent lithium, 0.3-0.4 atom percent carbon, and 0.3-0.5 atom percent oxygen. The products of the invention may be used to synthesize organometallic compounds having low color and low soluble inorganic chloride levels.
摘要翻译： 通过搅拌熔融碱金属在烃油中的分散速度的混合物，任选地在分散剂存在下，使熔融碱接触，制备大气稳定的涂覆的碱金属颗粒和大气稳定的包覆的碱金属粉末的分散体的方法 在分散体表面上方或下方的金属 - 烃油分散体与最多3重量％的无水二氧化碳同时搅拌分散体至少1分钟。 油中的分散体可以直接用于化学反应。 大部分油可以从分散体中除去以产生油湿颗粒，油湿颗粒可以用低沸点烃洗涤以产生烃湿颗粒，其可以被干燥以产生包覆的金属颗粒的大气稳定的粉末分散的颗粒 在油中，油湿颗粒，烃湿颗粒和气氛稳定的粉末均可用于化学反应。 洗涤和干燥后，该方法产生具有表面涂层组合物的锂粉末，其中含有0.1-0.3％原子百分比的锂，0.3-0.4％的碳和0.3-0.5％的氧。 本发明的产品可用于合成具有低颜色和低可溶性无机氯化物含量的有机金属化合物。
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公开(公告)号：US4770850A
公开(公告)日：1988-09-13
申请号：US103137
申请日：1987-10-01
申请人： Franz J. Hehmann , Setumadhavan Krishnamurthy , Erica Robertson , Steven J. Savage , Francis H. Froes
发明人： Franz J. Hehmann , Setumadhavan Krishnamurthy , Erica Robertson , Steven J. Savage , Francis H. Froes
CPC分类号： C22C23/00 , B22F9/008 , B22F9/06 , C22C1/0408
摘要： A novel magnesium alloy consisting essentially of about 6 to 14 weight percent calcium, about 4 to 8 weight percent of copper or nickel, balance magnesium.There is also provided a process for producing a magnesium alloy article having improved properties which comprises the steps of providing a rapidly solidified product having the composition defined above and having a maximum average thickness of about 200 microns in at least one dimension, introducing the rapidly solidified product into a mold, and consolidating the rapidly solidified product to obtain a desired densification of the rapidly solidified product. Consolidation may be carried out by hot isostatic pressing (HIP'ing) the rapidly solidified product at a pressure of about 100 to 300 MPa and a temperature of about 150.degree. to 350.degree. C. for a time sufficient to obtain the desired densification. Alternatively, consolidation may be accomplished by extrusion using the same temperature range, and an extrusion ratio of about 10:1 to 30:1.
摘要翻译： 一种新型的镁合金，其基本上由约6至14重量％的钙，约4至8重量％的铜或镍组成，余量为镁。 还提供了一种用于生产具有改进性能的镁合金制品的方法，其包括以下步骤：提供具有上述组成的快速固化的产品，并且在至少一个维度上具有约200微米的最大平均厚度，将快速凝固的 产品进入模具中，并且固化快速凝固的产品以获得所需的快速凝固产品的致密化。 固化可以通过在约100至300MPa的压力和约150至350℃的温度下通过热等静压（HIP“）快速凝固的产物进行足够长的时间以获得所需的致密化。 或者，可以通过使用相同温度范围的挤出和约10:1至30:1的挤出比来实现固结。
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公开(公告)号：US4617200A
公开(公告)日：1986-10-14
申请号：US741783
申请日：1985-06-06
申请人： Hugh C. Behrens
发明人： Hugh C. Behrens
摘要： There is disclosed a process for the preparation of substantially uniform granules of magnesium coated with a mixed salt composition from a eutectic melt. The process comprises the steps of forming globules of magnesium by shear action in a molten eutectic mixed salt bath which is maintained molten at a temperature of at last ten degrees Centrigrade below the freezing temperature of the magnesium.
摘要翻译： 公开了一种制备基本上均匀的由来自共晶熔体的混合盐组合物涂覆的镁的颗粒的方法。 该方法包括以下步骤：在熔融共晶混合盐浴中通过剪切作用形成镁球，所述熔融共晶混合盐浴在超过镁的冷冻温度的最后十摄氏度的温度下保持熔融。
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公开(公告)号：US4602947A
公开(公告)日：1986-07-29
申请号：US667305
申请日：1984-11-01
CPC分类号： C22B34/1272 , B22F9/06 , B22F9/08 , C22C1/0458 , C22C3/00
摘要： A process for producing titanium metal in finely-divided particulate form, by forming a liquid mixture of titanium and zinc, fracturing and solidifying the liquid mixture and evaporating zinc from the resulting finely-divided particles to produce finely divided particulate titanium. Titanium alloys may be produced by adding an alloying metal or metals to the liquid titanium-zinc mixture prior to fracturing, solidification and zinc evaporation. The liquid mixture of titanium and zinc may be produced by reaction of a reducing metal in a liquid mixture of zinc and reducing metal with titanium tetrachloride to produce reducing metal chloride and a liquid mixture of titanium and zinc. The reducing metal chloride is separated from the mixture of titanium and zinc. The alloying metal may be added to the liquid mixture of titanium and zinc by reacting alloying metal chlorides with the reducing metals in the liquid mixture of zinc and reducing metal. Sponge titanium or titanium alloys may be produced by omitting the fracturing and solidification step.
摘要翻译： 通过形成钛和锌的液体混合物，压制和固化液体混合物并从得到的细碎颗粒中蒸发锌以制备细碎的颗粒状钛，从而生产细碎颗粒形式的钛金属的方法。 钛合金可以在压裂，固化和锌蒸发之前向液态钛 - 锌混合物中加入合金金属或金属来制备。 钛和锌的液体混合物可以通过锌和还原金属的液体混合物中的还原金属与四氯化钛反应来制备还原金属氯化物和钛和锌的液体混合物。 还原金属氯化物与钛和锌的混合物分离。 可以通过使合金金属氯化物与锌和还原金属的液体混合物中的还原金属反应，将合金金属加入到钛和锌的液体混合物中。 可以通过省略压裂和固化步骤来生产海绵钛或钛合金。
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公开(公告)号：US4482134A
公开(公告)日：1984-11-13
申请号：US492874
申请日：1983-05-09
申请人： Masahiro Uda , Satoru Ohno , Tutomu Hoshi
发明人： Masahiro Uda , Satoru Ohno , Tutomu Hoshi
CPC分类号： B22F9/082 , B22F9/06 , B22F2009/0836 , B22F2009/084 , B22F2009/0848 , B22F2999/00
摘要： An apparatus for producing a particulate metal or alloy having a diameter of less than 5 microns by the reaction of a molten metal or alloy with activated hydrogen. The apparatus has (1) a metal melting hearth for melting a starting metal or alloy placed thereon and supporting the molten metal or alloy, (2) a discharge electrode positioned above, and opposite to, the metal or alloy placed on the melting hearth, (3) a closed vessel for containing the melting hearth and the discharge electrode, and (4) a gas inlet port in the wall of the closed vessel for introducing hydrogen or a hydrogen-containing gas into the vessel. The apparatus includes a device for quickly moving fine particles of the metal or alloy generated from the molten metal or alloy away from the vicinity of the molten metal by means of a current of hydrogen or a hydrogen-containing gas constituted by a suction duct for sucking a gas in the vicinity of the molten metal or alloy and withdrawing it out of the vessel and which extends into the vessel through the vessel wall and opens in the vicinity of the molten metal or alloy on the melting hearth; or a device for sending hydrogen or a hydrogen-containing gas into the closed vessel so as to form a turning flow of hydrogen or the hydrogen-containing gas moving downwardly from above the molten metal on the melting hearth or upwardly from below the molten metal. The improved apparatus also includes a trap for collecting the fine metal particles connected to the suction duct, a gas outlet or a gas passage, and a gas cooler provided upstream of the trap. The apparatus of this invention makes possible the production of fine particles of a metal or alloy having a narrow particle size distribution with a high recovery ratio.
摘要翻译： 一种通过熔融金属或合金与活性氢的反应生产直径小于5微米的颗粒状金属或合金的装置。 该设备具有（1）金属熔化炉，用于熔化放置在其上的起始金属或合金，并支撑熔融金属或合金;（2）位于熔炉上的金属或合金的上方和相对的放电电极， （3）用于容纳熔炉和放电电极的封闭容器，以及（4）用于将氢气或含氢气体引入容器的密封容器壁中的气体入口。 该装置包括用于通过氢气流或由用于吸入的吸入管构成的含氢气体快速移动从熔融金属或合金产生的金属或合金的细颗粒远离熔融金属附近的装置 在熔融金属或合金附近的气体，并将其从容器中取出并通过容器壁延伸到容器中，并在熔炉上的熔融金属或合金附近开口; 或用于将氢气或含氢气体输送到密闭容器中的装置，以便形成从熔融炉底上的熔融金属上方向下移动或从熔融金属下方向上移动的氢气或含氢气体的转向流。 改进的装置还包括用于收集连接到吸入管道，气体出口或气体通道的微细金属颗粒和设置在阱的上游的气体冷却器的阱。 本发明的装置使得具有高回收率的具有窄粒度分布的金属或合金的细颗粒成为可能。
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公开(公告)号：US4380518A
公开(公告)日：1983-04-19
申请号：US337049
申请日：1982-01-04
CPC分类号： B23K35/0244 , B22F1/0048 , B22F9/06 , B22F9/08 , B22F2009/0864
摘要： A method of making solder spheres having non-oxidized surfaces by introducing solder into a flux composition comprising an activator and an antioxidant. Molten solder (12) is extruded into a flux composition (24) maintained at ambient temperature or solder powder (40) is sifted into hot flux (46) and then cooled.
摘要翻译： 通过将焊料引入包含活化剂和抗氧化剂的助熔剂组合物中来制造具有非氧化表面的焊球的方法。 熔融焊料（12）被挤压成保持在环境温度的焊剂组合物（24）中，或者将焊料粉末（40）过滤到热通量（46）中，然后冷却。
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公开(公告)号：US4042374A
公开(公告)日：1977-08-16
申请号：US560478
申请日：1975-03-20
CPC分类号： B22F3/006 , B22F1/0048 , B22F9/002 , B22F9/06
摘要： The preparation of micron sized spherical particles of metals comprising emulsification of the metal in the molten state in a carrier fluid, preferably in the form of an inert liquid, and reacting the molten metal while in the emulsified state in the fluid to form an insoluble reaction product on the surface which stabilizes metal droplets in the emulsion.
摘要翻译： 制备微米级的金属球形颗粒，其包括在载体流体中优选以惰性液体的形式将熔融状态的金属乳化，并且在处于乳化状态的流体中使熔融金属反应以形成不溶性反应 产品在表面上稳定乳液中的金属液滴。
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公开(公告)号：US3840364A
公开(公告)日：1974-10-08
申请号：US22179672
申请日：1972-01-28
发明人： GEIGER D , FLEMINGS M , MEHRABIAN R
CPC分类号： B22F9/06 , C22B7/004 , C22B9/02 , C22C1/005 , Y02P10/234
摘要： A method of producing purified powders and of refining metal alloys from alloy scrap and the like. The alloy is brought to a state which is partly liquid and partly solid and in mixture form, preferably by heating the alloy to create a melt and then cooling the melt to permit partial solidification thereof. The mixture is vigorously agitated to create a slurry, the temperature of the slurry being controlled to provide a predetermined percentage of liquid-solid therein. Then the liquid is separated from the solid either by selectively draining the liquid or by producing a stream of the slurry and injecting into the stream a gas in the form of a high velocity jet, which atomizes and solidifies the liquid to form a particulate that is generally smaller than the solid portion of the mixture (i.e., the primary solid) and can be separated therefrom by screening, for example.
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公开(公告)号：US3598567A
公开(公告)日：1971-08-10
申请号：US3598567D
申请日：1968-07-01
申请人： NICHOLAS J GRANT
发明人： GRANT NICHOLAS J
CPC分类号： C22C33/0221 , B22F9/008 , B22F9/06 , C22C33/0257
摘要： A METHOD IS PROVIDED FOR PRODUCING HOT WORKABLE METAL POWDER FROM COMPOSITIONS NORMALLY DIFFICULT OR IMPOSSIBLE TO WORK. A MOLTEN METAL BATH IS ESTABLISHED OF A METAL COMPOSITION OF MELTING POINT ABOVE 1000* C. CONTAINING SUBSTANTIAL AMOUNTS OF AT LEAST ONE PHASEFORMING CONSTITUENT WHICH NORMALLY FORMS A SEGRAGATABLE PHASE ON COOLING. THE BATH IS SUBDIVIDED INTO MEDIUM TO SMALL METAL DROPLETS AND IS RAPIDLY COOLED TO A TEMPERATURE BELOW THE FREEZING POINT AT A COOLING RATE OF AT LEAST ABOUT 100* C./SEC., AND PREFERABLY FURTHER RAPIDLY COOLED TO OR NEAR ROOM TEMPERATURE. THE POWDER THUS PRODUCED, BECAUSE OF A FINE DENDRITIC GRAIN SIZE, IS ONLY SLIGHTLY IF AT ALL SEGREGATED AND ALL HARD BRITTLE PHASES ARE DISITRIBUTED AS FINE PARTICLES, MAKING THE ALLOY READILY HOT WORKABLE. EXCESS SOFT PHASES ALSO FOLLOW THE SAME HIGHLY DISPERSED DIESTRIBUTION. THUS, A PRODUCT IS PROVIDED CHARACTERIZED BY A FINE NEAR MICRON DISPERSION OF EXCESS PHASES WHICH NORMALLY SEGREGATE AND FORM AS COARSE PHASES, FOR EXAMPLE AT GRAIN BOUNDARIES, WITH RESULTANT POOR HOT WORKING PROPERTIES.
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公开(公告)号：US3522020A
公开(公告)日：1970-07-28
申请号：US3522020D
申请日：1966-01-03
申请人： IIT RES INST
发明人： PARIKH NIRANJAN M
CPC分类号： C22C38/44 , B22F9/06 , C22C33/0285 , Y10S75/95
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