UV-assisted direct ink writing of Si3N4/SiC preceramic polymer suspensions

Caitlyn M. Clarkson; Connor Wyckoff; Maria J.S. Parvulescu; Lisa M. Rueschhoff; Matthew B. Dickerson

doi:10.1016/j.jeurceramsoc.2022.03.001

UV-assisted direct ink writing of Si₃N₄/SiC preceramic polymer suspensions

Caitlyn M. Clarkson, Connor Wyckoff, Maria J.S. Parvulescu, Lisa M. Rueschhoff, Matthew B. Dickerson

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Direct ink writing (DIW) offers a flexible and readily available processing route for achieving ceramic components with complex shapes and geometries. The successful printing of ceramic green bodies using DIW typically requires the formulation of particle-loaded inks having a narrow window of rheological properties that enable both flow through the nozzle and support the weight of additional layers. Herein, we present a method for DIW that employs UV-curing to enable printing of otherwise unprintable inks. The inks used in this study are suspensions consisting of a commercially available polycarbosilane precursor and silicon nitride, Si₃N₄, powders. A diacrylate cross-linker and photointiator were employed to enable UV-curing. The effect of cross-linker content on UV-rheology and cure depth as they pertain to printing, and slump in self-supported lattice structures, are discussed.

Original language	English
Pages (from-to)	3374-3382
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	42
Issue number	8
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2022.03.001
State	Published - Jul 2022
Externally published	Yes

Funding

The authors gratefully acknowledge the Air Force Office of Scientific Research under the Aerospace Composites Portfolio, program officer Dr. Ming-Jen Pan, for funding this effort. The authors acknowledge support from the Air Force Research Laboratory Materials & Manufacturing Directorate including core and laboratory director's funds. Research was performed by UES employees (Connor Wyckoff and Dr. Maria Parvulescu) on site at AFRL/RX under contract FA8650–15-D-5230. This research was conducted while Dr. Caitlyn Clarkson held a NRC Research Associateship award at the Air Force Research Laboratory. We thank Randall Corns for operating the graphite furnace, Dr. Rahul Rao and Dr. Michael Cinibulk for their helpful discussions. DISTRIBUTION STATEMENT A. Approved for public release: distribution unlimited, AFRL-2021–2597. The authors gratefully acknowledge the Air Force Office of Scientific Research under the Aerospace Composites Portfolio, program officer Dr. Ming-Jen Pan, for funding this effort. The authors acknowledge support from the Air Force Research Laboratory Materials & Manufacturing Directorate including core and laboratory director’s funds. Research was performed by UES employees (Connor Wyckoff and Dr. Maria Parvulescu) on site at AFRL/RX under contract FA8650–15-D-5230 . This research was conducted while Dr. Caitlyn Clarkson held a NRC Research Associateship award at the Air Force Research Laboratory. We thank Randall Corns for operating the graphite furnace, Dr. Rahul Rao and Dr. Michael Cinibulk for their helpful discussions. DISTRIBUTION STATEMENT A. Approved for public release: distribution unlimited, AFRL-2021–2597 .

Keywords

Additive manufacturing
Direct ink writing
Polycarbosilane
Preceramic polymer
Si3N4

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jeurceramsoc.2022.03.001

Cite this

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title = "UV-assisted direct ink writing of Si3N4/SiC preceramic polymer suspensions",

abstract = "Direct ink writing (DIW) offers a flexible and readily available processing route for achieving ceramic components with complex shapes and geometries. The successful printing of ceramic green bodies using DIW typically requires the formulation of particle-loaded inks having a narrow window of rheological properties that enable both flow through the nozzle and support the weight of additional layers. Herein, we present a method for DIW that employs UV-curing to enable printing of otherwise unprintable inks. The inks used in this study are suspensions consisting of a commercially available polycarbosilane precursor and silicon nitride, Si3N4, powders. A diacrylate cross-linker and photointiator were employed to enable UV-curing. The effect of cross-linker content on UV-rheology and cure depth as they pertain to printing, and slump in self-supported lattice structures, are discussed.",

keywords = "Additive manufacturing, Direct ink writing, Polycarbosilane, Preceramic polymer, Si3N4",

author = "Clarkson, {Caitlyn M.} and Connor Wyckoff and Parvulescu, {Maria J.S.} and Rueschhoff, {Lisa M.} and Dickerson, {Matthew B.}",

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AU - Rueschhoff, Lisa M.

AU - Dickerson, Matthew B.

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