Preparation of Cu_2O-based Cermets by Hot Pressing and Its Densification Behavior

The effect of mixing process,sintering temperature and hot pressing pressure on the microstructure of Cu2O-based cermets were studied,and the densification mechanism of Cu2O-based cermets was discussed.The results show that Cu phase is in warm-like in Cu2O-Cu cermets prepared by branched Cu.Adopting two-step mixing processing can prepare Cu2O-Cu cermets with spherical Cu.The relative densities of the cermets increase with increasing the sintering temperature and hot pressing pressure,while the effects of temperatures and pressures are on different level.The plastic flow and particle rearrange of powder particles under pressure are the main densification mechanisms of Cu2O-based cermets.