IRON-BASE WEAR-RESISTANT COATINGS WITH CHROMIUM CARBIDES VIA LIQUID-PHASE REACTIVE SINTERING

摘要

The main conclusions of this study are summarized as follows: It is possible to form adherent, pore-free and, most important, crack-free wear-resistant coatings containing Cr_7C_3 and NbC by liquid-phase reactive sintering. The pining action of the NbC on the primary Cr_7C_3 does not appear to be effective under the conditions followed in this study. Although the hardness values obtained are relatively high, it seems that oil quenching cannot be eliminated if hardness values typical of welded coatings are the goal.