| 摘要 |
<p>The present invention relates to a cemented carbide body comprising WC with an average grain size of < 10 νm in a binder phase. In the cemented carbide body the WC grains can be classified in at least two groups in which a group of smaller grains has a maximum grain size amax and a group of larger grains has a minimum grain size bmin and each group contains at least 10 % of the total amount of WC grains. According to the invention bmin-amax > 0.5 νm and the difference in grain size within each group is > 1 νm.</p> |
