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    Method of making a sintered body, a powder mixture and a sintered body
    3.
    发明公开
    Method of making a sintered body, a powder mixture and a sintered body 有权
    韦尔法罕zur Herstellung eines gesintertenKörpers，Pulvermischung und gesinterterKörper

    公开(公告)号：EP1925383A2

    公开(公告)日：2008-05-28

    申请号：EP07119560.6

    申请日：2007-10-30

    申请人： Sandvik Intellectual Property AB

    发明人： Persson, Jeanette ,  Dahl, Leif ,  Weinl, Gerold ,  Rolander, Ulf

    IPC分类号： B22F1/00 ,  C22C29/02

    CPC分类号： B22F1/0003 ,  B22F2005/001 ,  B22F2998/10 ,  C22C29/02 ,  C22C29/08 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10

    摘要： Method of producing a sintered body comprising the steps of mixing one or more powders forming hard constituents with powders forming a binder phase comprising cobalt powder where the cobalt powder comprises cobalt having mainly a fcc-structure defined as the peak height ratio between the Co-fcc(200)/Co-hcp(101) being ≥3/2, as measured between the baseline and maximum peak height, measured by XRD with a 20/0 focusing geometry and Cu-Kα radiation. The present invention also relates to a ready-to-press powder comprising cobalt having mainly an fec-structure and where the cobalt powder has a grain size (FSSS) of 0.2-2.9 µm. The present invention also relates to sintered bodies made according to the method. The sintered bodied according to the present invention have reduced porosity and less crack formation.

    摘要翻译： 制造烧结体的方法包括以下步骤：将一种或多种形成硬组分的粉末与形成包含钴粉末的粘结相的粉末混合，其中钴粉末包含主要具有fcc结构的钴，其定义为Co-fcc的峰高比 （200）/ Co-hcp（101）为‰¥3/2，通过XRD与20/0聚焦几何和Cu-K±辐射测量，在基线和最大峰高之间测量。 本发明还涉及包含主要具有fec结构的钴并且钴粉末具有0.2-2.9μm的晶粒尺寸（FSSS）的即用粉末粉末。 本发明还涉及根据该方法制造的烧结体。 根据本发明的烧结体具有减小的孔隙率和较少的裂纹形成。