Probing Ink-Powder Interactions during 3D Binder Jet Printing Using Time-Resolved X-ray Imaging.

ABSTRACT: Capillary-driven ink infiltration through a porous powder bed in three-dimensional (3D) binder jet printing (inkjet printing onto a powder bed) controls the printing resolution and as-printed "green" strength of the resulting object. However, a full understanding of the factors controlling the kinetics of the infiltration remains incomplete. Here, high-resolution in situ synchrotron radiography provides time-resolved imaging of the penetration of an aqueous solution of eythylene glycol through a porous alumina powder bed, used as a model system. A static drop-on-demand inkjet printer was used to dispense liquid droplets onto a powder surface. The subsequent migration of the liquid front and its interactions with powder particles were tracked using fast synchrotron X-radiography in t

SUBMITTER: Barui S 

PROVIDER: S-EPMC7467558 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature