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    Method of producing tungsten-copper based composite powder and sintered alloys for heat-sink using said composite powder
    1.
    发明授权
    Method of producing tungsten-copper based composite powder and sintered alloys for heat-sink using said composite powder 失效
    使用所述复合粉末制造用于散热器的钨铜基复合粉末和烧结合金的方法

    公开(公告)号：US06914032B2

    公开(公告)日：2005-07-05

    申请号：US10271443

    申请日：2002-10-16

    申请人： Byoung Kee Kim ,  Seong Hyeon Hong ,  Yong Won Woo

    发明人： Byoung Kee Kim ,  Seong Hyeon Hong ,  Yong Won Woo

    IPC分类号： B22F9/20 ,  B22F1/00 ,  B22F3/00 ,  B22F9/22 ,  C01G41/00 ,  C22C1/04 ,  C22C27/04 ,  B01J23/00 ,  B01J23/70 ,  C22C9/00

    CPC分类号： C01G41/00 ,  B22F3/001 ,  B22F9/22 ,  B22F2009/041 ,  B22F2998/10 ,  C01P2004/03 ,  C01P2006/10 ,  C01P2006/40 ,  Y10T428/12181 ,  B22F1/0003 ,  B22F9/04

    摘要： The present invention relates to a method of producing W—Cu based composite powder, which is used in heat-sink materials for high-power integrated circuits, electric contact materials, etc, and to a method of producing a W—Cu based sintered alloy by using the composite powder. The method of producing tungsten-copper based composite powder includes first preparing composite oxide powder by dissolving ammonium metatungstate, [(NH4)6(H2W12O40).4H2O], as water-soluble tungsten salt, and copper nitrate or copper acetate in water to the desirable composition, followed by spray-drying and calcining; then preparing a tungsten oxide powder by separately calcining a tungsten-containing salt, such as ammonium paratungstate, (NH4)10(H10W12O46); forming ultra-fine tungsten-copper based composite oxide powder by mixing 20˜75 wt % of the composite oxide powder and 80˜25 wt % of the tungsten oxide powder to the desirable composition, followed by ball-milling; and reducing the ultra-fine tungsten-copper based composite oxide powder at temperature of 650˜1,050° C. If the composite powder is molded into a certain size and sintered thereafter in temperature of 1,110˜1,450° C., a W—Cu based sintered alloy of superior thermal and electric conductivities can be obtained thereby.

    摘要翻译： 本发明涉及用于大功率集成电路，电接触材料等的散热材料中的W-Cu系复合粉末的制造方法以及W-Cu系烧结合金的制造方法 通过使用复合粉末。 钨 - 铜基复合粉末的制造方法包括首先通过将偏钨酸铵[（NH 3）6（H 2）2 作为水溶性钨盐，硝酸铜或乙酸铜在水中的溶液加入到 所需组合物，然后喷雾干燥和煅烧; 然后通过单独煅烧含钨盐如仲钨酸铵（NH 4）10（H 10 W），制备氧化钨粉末 46）;和/或 通过将20〜75重量％的复合氧化物粉末和80〜25重量％的氧化钨粉末混合成所需组合物，然后进行球磨;形成超细钨铜复合氧化物粉末; 并在650〜1050℃温度下还原超细钨铜复合氧化物粉末。如果复合粉末成型为一定尺寸，然后在1110〜1450℃的温度下烧结，则以W-Cu为基准 因此可以获得具有优异的热和电导率的烧结合金。

    Process for manufacturing nano-phase TaC-transition metal based complex powder
    3.
    发明授权
    Process for manufacturing nano-phase TaC-transition metal based complex powder 有权
    制造纳米相TaC-过渡金属基复合粉末的方法

    公开(公告)号：US07153340B2

    公开(公告)日：2006-12-26

    申请号：US10747655

    申请日：2003-12-30

    申请人： Byong Kee Kim ,  Seong Hyeon Hong ,  Yong Won Woo

    发明人： Byong Kee Kim ,  Seong Hyeon Hong ,  Yong Won Woo

    IPC分类号： C01B31/30 ,  C22C29/06

    CPC分类号： C22C1/055 ,  B22F2998/10 ,  B22F9/026

    摘要： Ultra fine TaC-transition metal based complex powder is prepared by: dispersing a mixture of a Ta-containing material and a transition metal-containing water soluble salt into a solvent; stirring the mixture and spray-drying the stirred material to obtain precursor powder; calcining the precursor powder to form ultra fine Ta-transition metal complex oxide powder; mixing the ultra fine Ta-transition metal complex oxide powder with nano-sized carbon particles, followed by drying to obtain complex oxide powder; and subjecting the dried complex oxide powder to reduction/carburization in a non-oxidizing atmosphere.

    摘要翻译： 通过将含Ta材料和含过渡金属的水溶性盐的混合物分散到溶剂中制备超细的TaC-过渡金属基复合粉末; 搅拌混合物并喷雾干燥搅拌的物料，得到前体粉末; 煅烧前体粉末以形成超细的Ta-过渡金属复合氧化物粉末; 将超细Ta-过渡金属复合氧化物粉末与纳米级碳粒子混合，然后干燥得到复合氧化物粉末; 并在非氧化性气氛中使干燥的复合氧化物粉末进行还原/渗碳。