| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of producing a sintered article from a powder with well distributed cobalt and with optimum compaction pressure, and to provide a powder using the method and a sintered article produced by the method. <P>SOLUTION: The method of producing sintered bodies comprises the steps of mixing one or more powders forming hard constituents with powders forming a binder phase and including a cobalt powder by milling, granulation of the milled mixture, compaction of the granulated mixture to form a compacted body, and sintering the compacted body, wherein the cobalt powder has the peak height ratio of the Co-fcc(200)/Co-hcp(101) of ≥3/2, preferably ≥7/4, and most preferably ≥2 as expressed by the maximum peak height relative to the baseline in measurement by 2θ/θ focusing X-ray diffractometer using Cu-Kα line and wherein the cobalt powder has a grain size (FSSS) of 0.2-2.9 μm. <P>COPYRIGHT: (C)2008,JPO&INPIT |
