Preparation and Properties of Good Density Silver-coated Copper Power Matrix Material-copper Powders
Adopt ing the technology of one-step reduction and two-step reduction,using single reducing agent or compound reducing agent,the ultrafine copper powder was prepared.The powder was characterized by apparent density apparatus,the laser size distribution apparatus,XRD and SEM.The results show that through two-step reduction,1.1mol/L formaldehyde and 2.2mol/L Hydrazine hydrate composite reductant can be prepared by excellent performance rose copper powder by 2mol/L glucose prereduction,whose surface morphology is spherecal or kinds of spherical with particle size of 3～5.59 μm,well-distributed,non-aggregation,good dispersivity and silver-coated copper power coating surface density good.The coating thickness completely reaches 336 nm,which has good conductivity and oxidation stability.