Optimizing Porosity as a Function of Powder Morphology in Binder-Jet Printed Copper Filters

Copper has strong antimicrobial properties and high potential to be used as filters in clinical and industrial settings. Complex filter geometries with high surface areas are required for air filtration, making additive manufacturing (AM) an ideal route for producing highly porous copper filters. This study explores the potential of optimizing sintered porosity of binder-jet printed copper filters as a function of powder morphology. It is determined that decreased sphericity in copper powder leads to increased porosity in binder-jet printed copper filters.