Metal powders used in AM machines must have distinct physical and chemical characteristics for a reliable and reproducible printing result. These characteristics include particle morphology, size and distribution, density, porosity, flow-ability, agglomeration, humidity and chemical composition [1].

Main processes for the fabrication of metal powders are gas atomization, water atomization, centrifugal atomization and plasma atomization. The comparison of these processes revealed that plasma method produces perfect spherical powders however it is not a cost-effective, whereas the gas atomization creates spherical powders with optimal cost and appropriate shape [2].