Method of making metal composite powders
    1.
    发明授权
    Method of making metal composite powders 失效
    制备金属复合粉末的方法

    公开(公告)号:US5529804A

    公开(公告)日:1996-06-25

    申请号:US412930

    申请日:1995-03-29

    CPC分类号: B22F1/025 B22F9/24

    摘要: A process for the production of hard materials wherein hard constituent powders are coated with cobalt and/or nickel metal in solution by reducing the metals from a suitable compound such as an oxide, hydroxide or salt with a polyol while keeping the powder in suspension. The polyol functions both as a solvent and a reducing agent at the same time and is present in an amount of at least 5 times more moles polyol than moles metal. There is obtained an even distribution of the cobalt and/or nickel over the surface of the hard constituent powder without the formation of islands of pure metal.

    摘要翻译: 一种制备硬质材料的方法,其中硬质组分粉末在溶液中用钴和/或镍金属涂覆,通过在保持粉末悬浮液的同时将多种金属从合适的化合物如氧化物,氢氧化物或盐与多元醇一起还原。 多元醇同时作为溶剂和还原剂起作用,并且以多于金属摩尔量的多元醇的摩尔量的至少5倍的量存在。 在硬质成分粉末的表面上均匀分布了钴和/或镍,而不形成纯金属岛。

    POLYMETAL POWDER AND SINTERED COMPONENT PRODUCED BASED ON THIS POWDER
    3.
    发明申请
    POLYMETAL POWDER AND SINTERED COMPONENT PRODUCED BASED ON THIS POWDER 有权
    基于该粉末生产的聚合物粉末和烧结成分

    公开(公告)号:US20090188171A1

    公开(公告)日:2009-07-30

    申请号:US12093060

    申请日:2006-11-03

    IPC分类号: C09K3/14 C22C30/02

    摘要: A multi-metal powder, in particular for producing diamond tools comprises iron copper, cobalt and molybdenum whose contents are expressed in the following mass percentages: Fe+Cu+Co+Mo=98 mass %, the rest being oxygen and production impurities, wherein 15%=Cu=35%, 0.03=Mo/(Co+Fe+Mo)=0.10, —Fe/Co=2. A sintered compact is obtained by hot compaction of said multi-metal powder, for example, in the form of a diamond cutting tool.

    摘要翻译: 特别用于生产金刚石工具的多金属粉末包括铁,钴和钼,其含量按以下质量百分比表示:Fe + Cu + Co + Mo = 98质量%,其余为氧和生产杂质,其中 15%= Cu = 35%,0.03 = Mo /(Co + Fe + Mo)= 0.10,-Fe / Co = 2。 通过例如以金刚石切削工具的形式热压所述多金属粉末来获得烧结体。

    Metal micropowders based on tungsten and/or molybdenum and 3D transition metals
    7.
    发明授权
    Metal micropowders based on tungsten and/or molybdenum and 3D transition metals 有权
    基于钨和/或钼的金属微粉和3D过渡金属

    公开(公告)号:US06576037B1

    公开(公告)日:2003-06-10

    申请号:US09581640

    申请日:2000-09-13

    IPC分类号: B22F300

    摘要: The invention concerns a pre-alloyed metal powder consisting essentially of tungsten and/or molybdenum, at least one transition metal selected among iron, cobalt, nickel and copper, and optionally at least one additive, the iron content being less than 50 wt. % and the total additive content being less than 3 wt. %, relative to the total weight of metals, said pre-alloyed metal powder having elementary grain size measured with scanning electron microscope, greater than 200 nm and less than 5 micrometers. The invention also concerns a sintered part obtained with such a powder. The invention is particularly applicable for producing sintered parts to be used as electric contacts, heat sinks, spark machining electrodes, mechanical balance weights, inertial units, tool-holders, anti-radiation screen, armament components, sintered steel or diamond charged cutting or grinding tools or with titanium carbide.

    摘要翻译: 本发明涉及基本上由钨和/或钼组成的预合金化金属粉末,选自铁,钴,镍和铜中的至少一种过渡金属,以及任选的至少一种添加剂,铁含量小于50wt。 %,总添加量小于3wt。 相对于金属的总重量,所述预合金化金属粉末具有用扫描电子显微镜测量的单元晶粒尺寸,大于200nm且小于5微米。 本发明还涉及用这种粉末获得的烧结部件。 本发明特别适用于生产用作电触点,散热器,火花加工电极,机械平衡重,惯性单元,工具架,防辐射屏,武器组件,烧结钢或金刚石带电切割或磨削的烧结零件 工具或碳化钛。