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687 条记录 (耗时 0.034 秒)

    Method of producing tungsten-copper based composite powder and sintered alloys for heat-sink using said composite powder
    42.
    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。

    Method for producing amorphous based metals
    49.
    发明授权
    Method for producing amorphous based metals 失效
    无定形金属的制造方法

    公开(公告)号：US5776264A

    公开(公告)日：1998-07-07

    申请号：US631453

    申请日：1996-04-12

    申请人： Larry E. McCandlish ,  Bernard Kear ,  Nicos C. Angastiniotis

    发明人： Larry E. McCandlish ,  Bernard Kear ,  Nicos C. Angastiniotis

    IPC分类号： C01B13/14 ,  B22F9/00 ,  B22F9/22 ,  C01B21/06 ,  C01B31/30 ,  C01B31/34 ,  C01G39/00 ,  C01G41/00 ,  C01G41/02 ,  C22B34/30 ,  C22C45/10

    CPC分类号： B82Y30/00 ,  B22F9/002 ,  B22F9/22 ,  C01B21/062 ,  C01B31/301 ,  C01B31/34 ,  C01G41/02 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/61 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2006/12

    摘要： Amorphous tungsten, cobalt, nickel, molybdenum, iron and alloys thereof can be formed by reducing metal-containing compositions to form the elemental metal wherein the particle size of the elemental metal is less than about 80 microns. This is oxidized in an oxygen-starved environment containing less than 3% oxygen and an inert gas to slowly oxidize the elemental metal. By oxidizing the metal under these conditions, the normal exotherm occurring during oxidation is avoided. The slow oxidation of the metal continues forming an amorphous metal oxide. The amorphous metal oxide can then be reacted in a reducing environment such as hydrogen to form the amorphous elemental metal. This amorphous elemental metal can then be reacted with a carburizing gas to form the carbide or ammonia gas to form the nitride or hexamethylsilane to form the silicide. This permits gas/solid reactions. The amorphous metal can also be used in a variety of different applications.

    摘要翻译： 无定形钨，钴，镍，钼，铁及其合金可以通过还原含金属的组合物形成元素金属，其中元素金属的粒度小于约80微米。 这在含有少于3％氧气和惰性气体的氧饥饿环境中被氧化，以缓慢氧化元素金属。 通过在这些条件下氧化金属，避免氧化过程中发生的正常放热。 金属的缓慢氧化继续形成无定形金属氧化物。 然后可以在诸如氢的还原环境中使无定形金属氧化物反应以形成非晶元素金属。 然后可以使该非晶元素金属与渗碳气体反应以形成碳化物或氨气，以形成氮化物或六甲基硅烷以形成硅化物。 这允许气体/固体反应。 非晶态金属也可用于各种不同的应用。

    Method for making submicrometer transition metal carbonitrides
    50.
    发明授权
    Method for making submicrometer transition metal carbonitrides 失效
    亚微米过渡金属碳氮化物的制备方法

    公开(公告)号：US5756410A

    公开(公告)日：1998-05-26

    申请号：US807165

    申请日：1997-02-27

    申请人： Stephen D. Dunmead ,  Alan W. Weimer

    发明人： Stephen D. Dunmead ,  Alan W. Weimer

    IPC分类号： C04B35/56 ,  C01B21/082 ,  C01G41/00 ,  C04B35/58 ,  C01B21/00

    CPC分类号： B82Y30/00 ,  C01B21/0828 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64

    摘要： A submicrometer transition metal carbonitride is produced having the formula: M.sub.a M'.sub.b M".sub.(1-a-b) (C.sub.1-x) N.sub.x).sub.z wherein M is Ti, Zr or Hf; M' is V, Nb or Ta; M" is Cr, Mo or W; a ranges from 0 to 1; b ranges from 0 to 1 with the proviso that (a +b) is less than or equal to 1; x ranges from about 0.02 to about 0.95 and z ranges from about 0.9 to about 2. The transition metal carbonitride is produced by mixing (a) a transition metal oxide source of a transition metal in the above formula and (b) a carbon source such as carbon black. This mixture is heated at a rate of between about 100K/sec to about 100,000,000K/sec in a nitrogen containing non-oxidizing gas such as nitrogen or nitrogen mixed with argon to an elevated temperature that makes carbothermal reduction of the transition metal oxide source thermodynamically favorable for a residence time sufficient to convert the transition metal oxide source into at least one product selected from the group consisting of (i) a transition metal carbonitride and (ii) a transition metal carbonitride precursor. The product may be exposed to a finishing step involving heating the product to a temperature less than the elevated temperature in a finishing atmosphere such as nitrogen, hydrogen, inert gas or combinations thereof to form submicrometer carbonitrides of higher purity or different stoichiometry.

    摘要翻译： 制备亚微米过渡金属碳氮化物，其具有下式：MaM'bM“（1-a-b）（C1-x）Nx）z，其中M是Ti，Zr或Hf; M'为V，Nb或Ta; M“是Cr，Mo或W; a范围从0到1; b的范围为0至1，条件是（a + b）小于或等于1; x的范围为约0.02至约0.95，z的范围为约0.9至约2.过渡金属碳氮化物通过将（a）过渡金属的过渡金属氧化物源与上述式（b）中的碳源 作为炭黑。 将这种混合物在氮气或氮气混合的含氮非氧化性气体的氮气中以约100K /秒至约100,000,000K /秒的速率加热至高温，从而使过渡金属氧化物源热力学地进行碳热还原 有利于将过渡金属氧化物源转化成选自（i）过渡金属碳氮化物和（ii）过渡金属碳氮化物前体中的至少一种产物的停留时间。 该产品可能暴露于整理步骤，包括在最终气氛例如氮气，氢气，惰性气体或其组合中将产品加热至低于升高温度的温度，以形成更高纯度或不同化学计量的亚微米碳氮化物。