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    Fabrication method of sintered duplex nuclear fuel pellet
    1.
    发明授权
    Fabrication method of sintered duplex nuclear fuel pellet 失效
    烧结双相核燃料颗粒的制备方法

    公开(公告)号：US07485246B2

    公开(公告)日：2009-02-03

    申请号：US11049452

    申请日：2005-02-02

    申请人： Young Woo Rhee ,  Keon Sik Kim ,  Jong Hun Kim ,  Ki Won Kang ,  Jae Ho Yang ,  Kun Woo Song ,  Youn Ho Jung

    发明人： Young Woo Rhee ,  Keon Sik Kim ,  Jong Hun Kim ,  Ki Won Kang ,  Jae Ho Yang ,  Kun Woo Song ,  Youn Ho Jung

    IPC分类号： G21C21/00

    CPC分类号： G21C21/02 ,  C22B1/2413 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/40

    摘要： A method for fabricating a sintered duplex nuclear fuel pellet includes the steps of: preparing a first powder composed of a material selected from the group consisting of UO2 and UO2—Er2O3, and a second powder composed of UO2—Gd2O3 and a sintering additive; producing a duplex compact consisting of an annular outer portion composed of the first powder and a cylindrical inner portion composed of the second powder; and sintering the duplex compact under a reducing gas atmosphere, wherein the sintering additive contains manganese of 0.001% to 2% by weight based on the total weight of the cylindrical inner portion.

    摘要翻译： 一种烧结双相核燃料颗粒的制造方法包括以下步骤：制备由选自UO2和UO2-Er2O3的材料组成的第一粉末和由UO2-Gd2O3和烧结添加剂组成的第二粉末; 制造由第一粉末组成的环形外部部分和由第二粉末组成的圆筒形内部组成的双相压实体; 并在还原气体气氛下烧结所述双相压块，其中所述烧结添加剂含有基于所述圆筒形内部部分的总重量为0.001重量％至2重量％的锰。

    High-Frequency Inductive Heating Apparatus and Pressure-Less Sintering Method Using the Same
    4.
    发明申请
    High-Frequency Inductive Heating Apparatus and Pressure-Less Sintering Method Using the Same 审中-公开
    高频感应加热装置及其无压力烧结方法

    公开(公告)号：US20100051607A1

    公开(公告)日：2010-03-04

    申请号：US12405008

    申请日：2009-03-16

    申请人： Jae Ho Yang ,  Jong Hun Kim ,  Ki Won Kang ,  Young Woo Rhee ,  Keon Sik Kim ,  Kun Woo Song

    发明人： Jae Ho Yang ,  Jong Hun Kim ,  Ki Won Kang ,  Young Woo Rhee ,  Keon Sik Kim ,  Kun Woo Song

    IPC分类号： H05B6/00

    CPC分类号： H05B6/105

    摘要： A high-frequency inductive heating apparatus of ceramic material, whereby the nonconductive ceramic specimen in which induced current is not generated at room temperature is rapidly heated in a preheating housing, and a pressure-less sintering method using the same, are disclosed. The high-frequency inductive heating apparatus includes a preheating housing placed in a chamber to preheat a ceramic material; an induction coil installed around the preheating housing for supplying induced current so that the preheating housing is heated; and a high-frequency current generator for supplying high-frequency current to the induction coil. According to the present invention, inductive heating is made possible of nonconductive ceramic material for which inductive heating has thus far been impossible because induced current is not generated at room temperature, so that rapid heating by the self-heating of the specimen of ceramic material is possible.

    摘要翻译： 公开了一种陶瓷材料的高频感应加热装置，其中在室温下不产生感应电流的非导电陶瓷样品在预热壳体中快速加热，并且公开了使用其的无压烧结方法。 高频感应加热装置包括放置在腔室中以预热陶瓷材料的预热壳体; 安装在所述预热壳体周围的用于提供感应电流的感应线圈，以使所述预热壳体被加热; 以及用于向感应线圈提供高频电流的高频电流发生器。 根据本发明，由于在室温下不产生感应电流，所以不可能进行感应加热的非导电陶瓷材料进行感应加热，因此通过陶瓷材料试样的自加热的快速加热是 可能。

    Method of manufacturing sinter-active U3O8 powder and method of producing nuclear fuel pellets utilizing the same
    5.
    发明授权
    Method of manufacturing sinter-active U3O8 powder and method of producing nuclear fuel pellets utilizing the same 有权
    烧结活性U3O8粉末的制造方法以及使用其的制造核燃料粒子的方法

    公开(公告)号：US08449795B2

    公开(公告)日：2013-05-28

    申请号：US11947502

    申请日：2007-11-29

    申请人： Jae Ho Yang ,  Young Woo Rhee ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Kun Woo Song

    发明人： Jae Ho Yang ,  Young Woo Rhee ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Kun Woo Song

    IPC分类号： G21C21/00 ,  C01G43/01 ,  C01G43/025

    CPC分类号： G21C3/623 ,  G21C3/62 ,  G21C21/02 ,  Y02E30/38

    摘要： There is provided a method of producing U3O8 powder having large surface area and small particle size by oxidizing defective UO2 pellets and manufacturing nuclear fuel pellets which are stable in a pore structure and high in density through the use of a mixture comprising UO2 powder and U3O8 powder. The method includes producing an U308 powder having a surface area of at least 1 m2/g by oxidizing defective UO2 pellets at a temperature of 300 to 370° C. in such a way that a maximum weight increase rate per 1 g of the UO2 pellets is up to 0.06 wt %/min; producing a mixed powder by mixing the U3O8 powder with an UO2 powder by 2 to 15 wt %; producing a compact by compression molding the mixed powder; and sintering the compact in a reducing gas atmosphere at a temperature of 1600 to 1800° C. In addition, a small amount of an Al-compound may be added to the oxidized U3O8 powder before the U3O8 powder is mixed with the UO2 powder. The additive such as Al is mixed with the U3O8 powder and then mixed with the UO2 powder to produce the pellets by a conventional production method. This ensures a stable pore structure, high density and a considerable increase in a crystal grain size.

    摘要翻译： 提供一种通过氧化不良UO 2颗粒并制造核孔结构稳定且密度高的核燃料颗粒，通过使用包含UO 2粉末和U 3 O 8粉末的混合物制备具有大表面积和小粒径的U3O8粉末的方法 。 该方法包括通过在300-370℃的温度下氧化有缺陷的UO 2颗粒来生产表面积至少为1m 2 / g的U308粉末，使得每1g UO 2颗粒的最大重量增加率 高达0.06重量％/分钟; 通过将U3O8粉末与UO2粉末混合2〜15重量％来制造混合粉末; 通过压缩混合粉末制造压块; 并在1600〜1800℃的还原气体气氛中烧结。另外，在U 3 O 8粉末与UO 2粉末混合之前，可以向氧化的U3O8粉末中添加少量Al化合物。 将诸如Al的添加剂与U3O8粉末混合，然后与UO 2粉末混合以通过常规生产方法制备颗粒。 这确保了稳定的孔结构，高密度和晶粒尺寸的显着增加。

    METHOD OF MANUFACTURING SINTER-ACTIVE U3O8 POWDER AND METHOD OF PRODUCING NUCLEAR FUEL PELLETS UTILIZING THE SAME
    6.
    发明申请
    METHOD OF MANUFACTURING SINTER-ACTIVE U3O8 POWDER AND METHOD OF PRODUCING NUCLEAR FUEL PELLETS UTILIZING THE SAME 有权
    制造烧结活性U3O8粉末的方法及使用其制造核燃料粒子的方法

    公开(公告)号：US20080185743A1

    公开(公告)日：2008-08-07

    申请号：US11947502

    申请日：2007-11-29

    申请人： Jae Ho Yang ,  Young Woo Rhee ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Kun Woo Song

    发明人： Jae Ho Yang ,  Young Woo Rhee ,  Ki Won Kang ,  Jong Hun Kim ,  Keon Sik Kim ,  Kun Woo Song

    IPC分类号： G21C21/02

    CPC分类号： G21C3/623 ,  G21C3/62 ,  G21C21/02 ,  Y02E30/38

    摘要： There is provided a method of producing U3O8 powder having large surface area and small particle size by oxidizing defective UO2 pellets and manufacturing nuclear fuel pellets which are stable in a pore structure and high in density through the use of a mixture comprising UO2 powder and U3O8 powder. The method includes producing an U308 powder having a surface area of at least 1 m2/g by oxidizing defective UO2 pellets at a temperature of 300 to 370□ in such a way that a maximum weight increase rate per 1 g of the UO2 pellets is up to 0.06 wt %/min; producing a mixed powder by mixing the U3O8 powder with an UO2 powder by 2 to 15 wt %; producing a compact by compression molding the mixed powder; and sintering the compact in a reducing gas atmosphere at a temperature of 1600 to 1800□. In addition, a small amount of an Al-compound may be added to the oxidized U3O8 powder before the U3O8 powder is mixed with the UO2 powder. The additive such as Al is mixed with the U3O8 powder and then mixed with the UO2 powder to produce the pellets by a conventional production method. This ensures a stable pore structure, high density and a considerable increase in a crystal grain size.

    摘要翻译： 提供了通过氧化有缺陷的UO 2 N 2颗粒并制造核的方法制备具有大的表面积和小的粒度的U 3 O 8 N 8 通过使用包含二氧化钛粉末和U 3 O 8粉末的混合物的孔结构稳定且密度高的燃料颗粒 。 该方法包括通过在300〜370℃的温度下氧化不良的UO 2/2小球，制造表面积至少为1m 2 / g以上的U308粉末， 相对于每1g NiO 2颗粒的最大重量增加速率高达0.06wt％/ min; 通过将U 3 N 2 O 3粉末与UO 2 N 2粉末混合2至15重量％来制备混合粉末; 通过压缩混合粉末制造压块; 并在1600〜1800℃的温度下在还原气体气氛中烧结。 另外，在U 3 N 3 O 3上的少量Al化合物可以加入到氧化的N 3 O 8 O 8粉末中 > 8粉末与UO 2 N 2粉末混合。 将诸如Al的添加剂与U 3 N 8 O 8粉末混合，然后与UO 2 N 2粉末混合以通过常规的 生产方式。 这确保了稳定的孔结构，高密度和晶粒尺寸的显着增加。

    Nuclear fuel body including tungsten network and method of manufacturing the same
    9.
    发明授权
    Nuclear fuel body including tungsten network and method of manufacturing the same 有权
    包括钨网的核燃料体及其制造方法

    公开(公告)号：US06881376B2

    公开(公告)日：2005-04-19

    申请号：US10677681

    申请日：2003-10-02

    申请人： Kun Woo Song ,  Jae Ho Yang ,  Keon Sik Kim ,  Ki Won Kang ,  Jong Hun Kim ,  Youn Ho Jung

    发明人： Kun Woo Song ,  Jae Ho Yang ,  Keon Sik Kim ,  Ki Won Kang ,  Jong Hun Kim ,  Youn Ho Jung

    IPC分类号： G21C3/62 ,  B22F3/00

    CPC分类号： G21C3/623 ,  G21Y2002/104 ,  G21Y2004/10 ,  Y02E30/38

    摘要： The present invention relates to a nuclear fuel body comprising tungsten network and a method for manufacturing the same, more particularly, a nuclear fuel body in which tungsten network is continuously formed over the entire or some parts of a sintered body and a method for manufacturing the same. The sintered body in the nuclear fuel body of the present invention contains tungsten network having excellent heat conductivity, leading to the enhancement of heat conductivity of the nuclear fuel sintered body itself with decreasing the temperature of the nuclear fuel, so that it can contribute to the improvement in safety and performance of nuclear fuel.

    摘要翻译： 本发明涉及一种包括钨网络的核燃料体及其制造方法，更具体地说，涉及在烧结体的全部或部分上连续形成钨网的核燃料体， 相同。 本发明的核燃料体中的烧结体含有具有优异导热性的钨网络，导致核燃料烧结体本身的导热性随着核燃料温度的降低而提高，从而可以有助于 提高核燃料的安全和性能。