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Effect of oxide nanoparticles in aqueous alumina inks for material extrusion additive manufacturing
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-7910-4993
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4888-6237
2024 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 44, no 11, p. 6668-6676Article in journal (Refereed) Published
Abstract [en]

The effects of the addition of nanoparticles (NPs) of alumina (NA) and silica (NS) on the rheological properties of aqueous-based ceramic inks for material extrusion-based additive manufacturing (ME-AM) and sinterability of printed ceramic components were investigated. The inks were first designed using bimodal particle sizes of NPs with micro-alumina, and their solids fraction in printable inks was found to be dependent on the functionalization properties of NPs. NAs create a lubricating effect in the ink system and improve solids-loading in the ink. Meanwhile, NSs form silanol bonds in aqueous-based inks that increase viscosity and reduce solids-loading for a printable ME-AM ink. The inks containing NPs with higher solids-loading and optimized rheology were printed using ME-AM, and the printed components were sintered at 1400–1550 ºC. Adding NPs in the ink significantly improved the sinterability of printed shapes by enhancing sintering kinetics and filling-effects, with NS having a more significant effect than NA.

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 44, no 11, p. 6668-6676
Keywords [en]
3D printing, Nanoparticles, Inks, Rheology, Shrinkage, Density
National Category
Other Materials Engineering Other Chemistry Topics
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-105214DOI: 10.1016/j.jeurceramsoc.2024.04.015ISI: 001240139300001Scopus ID: 2-s2.0-85190172570OAI: oai:DiVA.org:ltu-105214DiVA, id: diva2:1853795
Funder
The Kempe Foundations, SMK21-0021
Note

Validerad;2024;Nivå 2;2024-06-28 (hanlid);

Full text licence: CC BY

Available from: 2024-04-23 Created: 2024-04-23 Last updated: 2024-06-28Bibliographically approved

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Hossain, Sk SaddamAkhtar, Farid

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