Material process development for the fabrication of heterogeneous titanium structures with selective pore morphology by a hybrid additive manufacturing process

This paper addresses a new methodology to fabricate cellular structures with embedded close pores distributed in controlled fashion. A hybrid additive manufacturing system integrating binder jetting and material extrusion was employed to selectively incorporate a sacrificial polymer into the structures followed by a post-processing step to decompose the polymer. Four different polymer compositions mixture of bisphenol-A ethoxylated diacrylate...