公开(公告)号：US08852315B2

公开(公告)日：2014-10-07

申请号：US12834431

申请日：2010-07-12

Applicant: Walter Curlook ,  Dimitri S. Terekhov ,  Sergiy Kotvun ,  Olujide Babatunde Olurin ,  Nanthakumar Victor Emmanuel

Inventor： Walter Curlook ,  Dimitri S. Terekhov ,  Sergiy Kotvun ,  Olujide Babatunde Olurin ,  Nanthakumar Victor Emmanuel

IPC: C22B23/06 ,  C22B15/00 ,  B22F9/22 ,  B22F9/30 ,  C22B5/12 ,  C22B23/02 ,  C22C19/03

CPC classification number: C22B23/065 ,  B22F9/22 ,  B22F9/305 ,  B22F2201/013 ,  B22F2201/04 ,  B22F2201/05 ,  B22F2998/10 ,  B22F2999/00 ,  C22B5/12 ,  C22B15/0026 ,  C22B23/021 ,  C22C19/03 ,  B22F2201/03

Abstract: An improved method of reducing a mixed metal oxide composition comprising oxides of nickel, cobalt, copper and iron in a hydrogen atmosphere to produce a mixture of the respective metals, the improvement wherein the atmosphere further comprises water vapor at a concentration, temperature and time to effect selective reduction of the oxides of nickel cobalt and copper relative to the iron oxide to produce the metallic mixture having a reduced ratio of metallic iron relative to metallic nickel, cobalt and copper.

Abstract translation: 一种在氢气氛中还原包含镍，钴，铜和铁的氧化物的混合金属氧化物组合物以产生各种金属的混合物的改进方法，其中气氛还包括浓度，温度和时间的水蒸气 相对于氧化铁有效地选择性还原镍钴和铜的氧化物，以产生金属铁相对于金属镍，钴和铜的比例降低的金属混合物。

公开(公告)号：US20130098509A1

公开(公告)日：2013-04-25

申请号：US13807111

申请日：2011-06-29

Applicant: Mahoro Fujihara ,  Koshi Yoshimura

Inventor： Mahoro Fujihara ,  Koshi Yoshimura

IPC: H01F41/00 ,  H01F1/01

CPC classification number: H01F41/005 ,  B22F2003/248 ,  B22F2999/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  C23C8/10 ,  H01F1/01 ,  H01F1/0536 ,  H01F1/0577 ,  H01F41/026 ,  B22F2201/03 ,  B22F2201/05

Abstract: An object of the present invention is to provide a method for producing a surface-modified rare earth metal-based sintered magnet having extremely excellent corrosion resistance even in an environment with fluctuating temperature and humidity and also having excellent magnetic characteristics. The method for producing a surface-modified rare earth metal-based sintered magnet of the present invention as a means for achieving the object is characterized by comprising a step of subjecting a rare earth metal-based sintered magnet to a heat treatment at 200° C. to 600° C. in an atmosphere having an oxygen partial pressure of 1×103 Pa to 1×105 Pa and a water vapor partial pressure of 45 Pa or less with the ratio between the oxygen partial pressure and the water vapor partial pressure (oxygen partial pressure/water vapor partial pressure) being 450 to 20000.

Abstract translation: 本发明的目的是提供即使在具有波动的温度和湿度的环境中也具有优异的磁特性的，具有极好的耐腐蚀性的表面改性的稀土金属基烧结磁体的制造方法。 本发明的表面改性稀土金属类烧结磁体的制造方法作为实现目的的手段，其特征在于，包括使稀土类金属系烧结磁体在200℃下进行热处理的工序 在氧分压为1×10 3 Pa〜1×10 5 Pa，水蒸气分压为45Pa以下的气氛中，在氧分压与水蒸气分压之间， 氧分压/水蒸气分压）为450〜20000。

公开(公告)号：US08268204B2

公开(公告)日：2012-09-18

申请号：US12552480

申请日：2009-09-02

Applicant: Young Woo Rhee ,  Dong Joo Kim ,  Kun Woo Song ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Jae Ho Yang

Inventor： Young Woo Rhee ,  Dong Joo Kim ,  Kun Woo Song ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Jae Ho Yang

IPC: B22F3/12

CPC classification number: B30B11/02 ,  B22F2003/033 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  B28B3/027 ,  B30B15/022 ,  C04B35/51 ,  C04B2235/3284 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/652 ,  C04B2235/6582 ,  C04B2235/77 ,  C04B2235/94 ,  C04B2235/9638 ,  G21C21/02 ,  G21C2003/045 ,  B22F5/106 ,  B22F1/007 ,  B22F3/02 ,  B22F3/1007 ,  B22F2201/013 ,  B22F2201/04 ,  B22F2201/05 ,  B22F2201/10

Abstract: A method for manufacturing an annular nuclear fuel pellet is provided. In the method, an annular nuclear fuel green compact whose lateral cross-section is a trapezoid is prepared. The thickness of the annular nuclear fuel green compact reduces along one direction of the central axis, and a green density of the nuclear fuel green compact increases along one direction of the central axis. The annular nuclear fuel green compact is sintered under a reducing gas atmosphere so that the annular nuclear fuel pellet is obtained. According to this method, the annular pellet which has uniform inner and outer diameters and small diametric tolerances along the pellet height is fabricated without grinding the pellet surfaces.

Abstract translation: 提供一种制造环形核燃料颗粒的方法。 在该方法中，准备了横截面为梯形的环状核燃料生坯。 环形核燃料生坯的厚度沿着中心轴的一个方向减小，并且核燃料生坯的绿色密度沿着中心轴的一个方向增加。 环形核燃料生坯在还原气氛下烧结，得到环状核燃料颗粒。 根据该方法，在不研磨颗粒表面的情况下制造具有均匀的内径和外径均匀且小颗粒高度的小直径公差的环形颗粒。

公开(公告)号：US08128757B2

公开(公告)日：2012-03-06

申请号：US12515551

申请日：2007-11-19

Applicant: Hiroshi Nagata ,  Yoshinori Shingaki

Inventor： Hiroshi Nagata ,  Yoshinori Shingaki

IPC: H01F1/03 ,  C21D1/02

CPC classification number: C22C38/005 ,  B22F3/02 ,  B22F2998/00 ,  B22F2999/00 ,  C22C2202/02 ,  H01F41/0266 ,  H01F41/0273 ,  B22F3/03 ,  B22F2201/05 ,  B22F2202/06

Abstract: There is provided a method of manufacturing a permanent magnet having extremely high orientation by arranging such that the crystal fractures of alloy raw meal powder having more equal crystal orientational relationship are combined in magnetic field. In this invention, alloy raw meal powder is filled into a cavity and, while agitating the alloy raw meal powder inside the cavity, is oriented in the magnetic field. This oriented body is then compression molded in the magnetic field into a predetermined shape.

Abstract translation: 提供了一种制造具有极高取向性的永久磁铁的方法，通过这样设置使得在磁场中组合具有更大的晶取向关系的合金生粉粉末的晶体断裂。 在本发明中，将合金生粉粉末填充到空腔中，同时在空腔内搅拌合金生粉末，在磁场中取向。 然后将该定向体在磁场中压缩成预定形状。

公开(公告)号：US20100254847A1

公开(公告)日：2010-10-07

申请号：US12552480

申请日：2009-09-02

Applicant: Young Woo Rhee ,  Dong Joo Kim ,  Kun Woo Song ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Jae Ho Yang

Inventor： Young Woo Rhee ,  Dong Joo Kim ,  Kun Woo Song ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Jae Ho Yang

IPC: B22F3/12 ,  B22F1/00

CPC classification number: B30B11/02 ,  B22F2003/033 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  B28B3/027 ,  B30B15/022 ,  C04B35/51 ,  C04B2235/3284 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/652 ,  C04B2235/6582 ,  C04B2235/77 ,  C04B2235/94 ,  C04B2235/9638 ,  G21C21/02 ,  G21C2003/045 ,  B22F5/106 ,  B22F1/007 ,  B22F3/02 ,  B22F3/1007 ,  B22F2201/013 ,  B22F2201/04 ,  B22F2201/05 ,  B22F2201/10

Abstract: A method for manufacturing an annular nuclear fuel pellet is provided. In the method, an annular nuclear fuel green compact whose lateral cross-section is a trapezoid is prepared. The thickness of the annular nuclear fuel green compact reduces along one direction of the central axis, and a green density of the nuclear fuel green compact increases along one direction of the central axis. The annular nuclear fuel green compact is sintered under a reducing gas atmosphere so that the annular nuclear fuel pellet is obtained. According to this method, the annular pellet which has uniform inner and outer diameters and small diametric tolerances along the pellet height is fabricated without grinding the pellet surfaces.

Abstract translation: 提供一种制造环形核燃料颗粒的方法。 在该方法中，准备了横截面为梯形的环状核燃料生坯。 环形核燃料生坯的厚度沿着中心轴的一个方向减小，并且核燃料生坯的绿色密度沿着中心轴的一个方向增加。 环形核燃料生坯在还原气氛下烧结，得到环状核燃料颗粒。 根据该方法，在不研磨颗粒表面的情况下制造具有均匀的内径和外径均匀且小颗粒高度的小直径公差的环形颗粒。

公开(公告)号：US20090042051A1

公开(公告)日：2009-02-12

申请号：US11921514

申请日：2006-06-15

Applicant: Bjorn Skarman ,  Zhou Ye ,  Patricia Jansson

Inventor： Bjorn Skarman ,  Zhou Ye ,  Patricia Jansson

IPC: B22F7/02 ,  B22F3/14 ,  H01F1/01 ,  B22F1/00

CPC classification number: B22F3/02 ,  B22F1/0062 ,  B22F3/24 ,  B22F2003/241 ,  B22F2003/248 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/14 ,  H01F1/24 ,  H01F1/33 ,  H01F3/08 ,  H01F27/255 ,  H01F41/0246 ,  Y10T428/12028 ,  B22F1/02 ,  B22F1/0003 ,  B22F3/1021 ,  B22F2201/00 ,  B22F2201/02 ,  B22F2201/10 ,  B22F2201/05

Abstract: A process for the manufacture of soft magnetic composite components is provided comprising the steps of die compacting a powder composition comprising a mixture of soft magnetic, iron or iron-based powder, the core particles of which are surrounded by an electrically insulating, inorganic coating, and an organic lubricant in an amount of 0.05 to 1.5% by weight of the composition, the organic lubricant being free from metal and having a temperature of vaporisation less than the decomposition temperature of the coating; ejecting the compacted body from the die; heating the compacted body in a non-reducing atmosphere to a temperature above the vaporisation temperature of the lubricant and below the decomposition temperature of the inorganic coating for removing the lubricant from the compacted body, and subjecting the obtained body to heat treatment at a temperature between 3000 and 6000 in water vapour. The invention also concerns soft magnetic composite components having a transverse rupture strength of at least 100 MPa, a permeability of at least 700, and a core loss at 1 Tesla and 400 Hz of at most 70 W/kg.

Abstract translation: 提供了一种用于制造软磁性复合材料部件的方法，包括以下步骤：将包含软磁性，铁或铁基粉末的混合物的粉末组合物模压成型，其核心颗粒被电绝缘的无机涂层包围， 和有机润滑剂，其含量为组合物重量的0.05-1.5％，有机润滑剂不含金属，其蒸发温度小于涂层的分解温度; 将压实体从模具中弹出; 将非压缩气氛中的压实体加热至高于润滑剂蒸发温度的温度并低于无机涂层的分解温度，以从压实体中除去润滑剂，并将所得体在 3000和6000水蒸汽。 本发明还涉及具有至少100MPa的横向断裂强度，至少700的渗透率和至多70W / kg的1特斯拉和400Hz的铁心损耗的软磁性复合材料部件。

公开(公告)号：US07056397B2

公开(公告)日：2006-06-06

申请号：US10275158

申请日：2001-05-16

Applicant: Dag Noréus ,  Ye Zhou

Inventor： Dag Noréus ,  Ye Zhou

IPC: C21D10/00

CPC classification number: H01M4/383 ,  B22F1/0088 ,  B22F2999/00 ,  B22F2201/05 ,  B22F9/16 ,  B22F2201/013

Abstract: The invention concerns a method of improving the properties of a hydrogen storage alloy powder for a negative electrode of a rechargeable nickel hydride battery. The method comprises the steps of hydriding a powdered alloy starting material, oxidizing the obtained hydride alloy powder and washing the oxidized powder. The invention also concerns the obtained powder.

Abstract translation: 本发明涉及一种改善可再充电镍氢电池负极的储氢合金粉末的性能的方法。 该方法包括氢化粉末合金原料，氧化所得氢化物合金粉末并洗涤氧化粉末的步骤。 本发明还涉及获得的粉末。

公开(公告)号：US06537489B2

公开(公告)日：2003-03-25

申请号：US09972915

申请日：2001-10-10

Applicant: Sven Allroth ,  Björn Johansson ,  Paul Skoglund

Inventor： Sven Allroth ,  Björn Johansson ,  Paul Skoglund

IPC: B22F308

CPC classification number: C22C33/02 ,  B22F3/087 ,  B22F2003/023 ,  B22F2003/026 ,  B22F2003/145 ,  B22F2998/00 ,  B22F2999/00 ,  C22C33/0207 ,  B22F9/082 ,  B22F2201/05

Abstract: The present invention concerns a method of preparing PM products by high velocity compaction of iron or iron-based powers having irregular powder particles.

公开(公告)号：US06355087B1

公开(公告)日：2002-03-12

申请号：US09618725

申请日：2000-07-18

Applicant: Johan Arvidsson ,  Ola Eriksson

Inventor： Johan Arvidsson ,  Ola Eriksson

IPC: B22F904

CPC classification number: C22C33/0264 ,  B22F1/0085 ,  B22F1/0088 ,  B22F2999/00 ,  C21D3/02 ,  B22F9/082 ,  B22F2201/05 ,  C21D3/04

Abstract: The invention concerns a low pressure for the preparation of an iron-based, optionally alloyed powder comprising the steps of preparing a raw powder essentially consisting of iron and optionally at least one alloying element selected from the group consisting of chromium, manganese, copper, nickel, vanadium, niobium, boron, silicon, molybdenum and tungsten; charging a gas tight furnace with the powder in an essentially inert gas atmosphere and closing the furnace; increasing the furnace temperature; monitoring the increase of the formation of CO gas and evacuating gas from the furnace when a significant increase of the CO formation is observed and cooling the powder when the increase of the formation of CO gas diminishes.

Abstract translation: 本发明涉及用于制备铁基，任选合金粉末的低压，包括以下步骤：制备基本上由铁组成的原料粉末和任选的至少一种选自铬，锰，铜，镍的合金元素 ，钒，铌，硼，硅，钼和钨; 在基本上惰性气体气氛中将粉末装入气密炉中并关闭炉子; 提高炉温; 当CO气体形成的显着增加被观察到时，监测CO气体形成的增加和从炉中排出气体的增加，并且当CO气体的形成增加时，粉末冷却。

公开(公告)号：US06342087B1

公开(公告)日：2002-01-29

申请号：US09465324

申请日：1999-12-17

Applicant: Johan Arvidsson ,  Alf Tryggmo

Inventor： Johan Arvidsson ,  Alf Tryggmo

IPC: B22F100

CPC classification number: C22C33/0285 ,  B22F2998/10 ,  B22F2999/00 ,  B22F9/082 ,  B22F1/0088 ,  B22F2201/013 ,  B22F2201/05

Abstract: The invention concerns a process for producing low oxygen, essentially carbon free stainless steel powder, which comprises the steps of preparing molten steel which in addition to iron contains carbon and at least 10% of chromium, adjusting the carbon content of the melt to a value which is decided by the expected oxygen content after water atomising; water-atomising the melt and annealing the as-atomised powder at a temperature of at least 1120° C. in a reducing atmosphere containing controlled amounts of water. The invention also concerns a water-atomised powder including 10% by weight of chromium and having a carbon content between 0.2 and 0.7, preferably between 0.4 and 0.6% by weight and an oxygen/carbon ratio of about 1 to 3 and at most 0.5% of impurities, as well as the annealed powder obtained according to the process.

Abstract translation: 本发明涉及一种生产低氧，基本上不含碳的不锈钢粉末的方法，该方法包括以下步骤：制备钢铁，除了含铁和至少10％的铬之外，还将铁熔体的碳含量调节至一个值 由水雾化后预期的氧含量决定; 使熔融物雾化并在至少1120℃的温度下在含有受控量的水的还原气氛中将雾化的粉末退火。 本发明还涉及一种水雾化粉末，其包括10重量％的铬，其碳含量在0.2和0.7之间，优选在0.4-0.6重量％之间，氧/碳比约为1到3，最多为0.5％ 的杂质，以及根据该方法获得的退火粉末。