| Autor: |
Skury, Ana Lúcia Diegues, Bobrovinitchii, Guerold Sergueevitch, de Azevedo, Marcia G., Monteiro, Sérgio Neves |
| Zdroj: |
Materials Science Forum; August 2012, Vol. 727 Issue: 1 p1053-1056, 4p |
| Abstrakt: |
The lifetime of drilling tools for petroleum well perforation is strongly affected by the type of insert at the crown of the tool. Usually, this insert is made a of hardmetal (WC-Co) cermet with embedded diamond particles. In the present work an investigation on the effect of Cu and Ti as doping agents on a WC-6%Co cermet was conducted. I was found a change in coercive force in the interval 12 to 34 kJ/m and harness from 73 to 89 HRA with improving adhesion. It was also shown that this could significantly increase the operational capacity of a drilling tool. |
| Databáze: |
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