Development of a Highly Loaded Zirconium Carbide Paste for Material Extrusion Additive Manufacturing
Abstract
A highly loaded, aqueous-based zirconium carbide (ZrC) paste was developed for ceramic on-demand extrusion (CODE). Commercial ZrC powder was ball milled to reduce the particle size to ∼1 μm. Paste composition was determined by rheological characterization and observation of printing behavior; the final paste consisted of 46–47 vol% ZrC, 43.5 vol% distilled water, 8.1 vol% dispersant, and 1.6 vol% binder. Rheological characterization of the paste showed a yield stress of ∼8 Pa and shear thinning behavior (ΔG′/Δσ* = −55). The paste was printed using a 610 μm nozzle; a test print showed shape fidelity using the developed paste. A pressureless sintering study was performed; a sintering temperature of 2000°C with a 2-hour hold produced samples of 90 % relative density with 3.8 μm grains, which was consistent with literature. The developed paste, in combination with the pressureless densification results, adds a new, ultra-high temperature material to ceramic extrusion additive manufacturing.
Recommended Citation
C. Sabata et al., "Development of a Highly Loaded Zirconium Carbide Paste for Material Extrusion Additive Manufacturing," Journal of the European Ceramic Society, article no. 116881, Elsevier, Jan 2024.
The definitive version is available at https://doi.org/10.1016/j.jeurceramsoc.2024.116881
Department(s)
Materials Science and Engineering
Keywords and Phrases
Additive manufacturing; Ceramic on-demand extrusion; Ceramic processing; Direct ink write; Zirconium carbide
International Standard Serial Number (ISSN)
1873-619X; 0955-2219
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
01 Jan 2024
Comments
Missouri University of Science and Technology, Grant None