Metallic powder slurry used for fabrication of metallic articles by prototyping process includes a photopolymerizable resin, a photoinitiator and metallic powder

摘要

A paste composition, including a binding agent charged with metallic powder, to be used in a solid freeform fabrication procedure, comprising:a) a solidifiable binding agent comprised of at least one polymerizable resin, with a viscosity of less than 4000 mPa.s, measured at 25° C.;b) at least one initiator, in a concentration greater than about 0.1% by mass with respect to the mass of the resin; andc) a mixture of at least two metallic powders, said mixture having a volumetric concentration greater than 40% with respect to the composition, wherein said mixture of metal powders is either i) a bimodal or trimodal mixture in nature, or ii) is a majority of stainless steel with an amount of NiB or NiP and combinations thereof effective to lower the sintering temperature.