Effect of Drying Methods on Morphology and Performance of Ulfra-fine Copper Powder
The ultrafine copper powder was prepared by oxidation-reduction method.The moisture in the powder was wiped out by heated-air drying,microwave drying,vacuumize and vacuum freeze drying.The surface morphology,surface structure and size of the copper powder were characterized by particle size distribution meter,SEM and XRD.The experiments show that,vacuum freeze-drying can effectively hinder the agglomeration between the ultrafine copper powder,and ensure the good performance of the copper,which is the better drying methods for ultrafine copper powder.