Stereolithography (SL) is a technique allowing additive manufacturing of complex ceramic parts by selective photopolymerization of a photocurable suspension containing photocurable monomer, photoinitiator, and a ceramic powder. The manufactured three-dimensional object is cleaned and converted into a dense ceramic part by thermal debinding of the polymer network and subsequent sintering. The de...

Feedstock for powder injection moulding of silver was prepared using water-soluble binder composed polyethylene glycol (PEG) and polyvinyl butyrol (PVB). Silver powders with particle size in range 1 μm to 20 can be mixed PEG/PVB system form feedstocks having loadings 42 vol% 45 vol%. PEG removed water leaching method while PVB by thermal debinding. Specimens retained their shapes during debindi...

Parts made by metal additive manufacturing processes assisted sintering suffer from embrittlement due to binder/powders interactions. Using a core-shell approach, we modelled the diffusion of carbon and oxygen binder into metallic powders. The model was assessed measuring interstitials content upon various debinding/sintering steps. diffusion/precipitation phenomena during these non-isothermal ...

Abstract Metal 3D printing based on the photopolymerization reaction (Digital Light Processing—DLP) of an organic matrix in which metal particles are embedded is a developing technology. This technology requires step resin removal and densification by sintering to obtain part. process has been applied copper. Photocurable formulations with high loading rate copper powder 60 vol.% were developed...

3D ink-extrusion of powders followed by sintering is an emerging additive manufacturing method capable creating metallic microlattices. Here, we study the creation hierarchically porous Fe or Ni scaffolds extrusion 0/90° lattices from inks consisting fine oxide (Fe2O3 NiO, < 3 µm), coarse space-holder particles (CuSO4, 45 µm) and a polymer binder within solvent. After leaching debinding lattice...