3D Bioplotter Research Papers

Displaying all papers by R. Spolenak (1 results)

Microstructure and Processing of 3D Printed Tungsten Microlattices and Infiltrated W–Cu Composites

Advanced Engineering Materials 2018 Volume 20, Article 1800354

ungsten is of industrial relevance due its outstanding intrinsic properties (e.g., highest melting‐point of all elements) and therefore difficult to 3D‐print by conventional methods. Here, tungsten micro‐lattices are produced by room‐temperature extrusion‐based 3D‐printing of an ink comprising WO3–0.5%NiO submicron powders, followed by H2‐reduction and Ni‐activated sintering. The green bodies underwent isotropic linear shrinkage of ≈50% during the thermal treatment resulting in micro‐lattices, with overall 35–60% open‐porosity, consisting of 95–100% dense W–0.5%Ni struts having ≈80–300 μm diameter. Ball‐milling the powders and inks reduced the sintering temperature needed to achieve full densification from 1400 to 1200 °C and enabled the ink to be extruded…