Laser-induced slip casting as an additive manufacturing approach for silicon carbide

Corson L. Cramer; Mehdi Mohammadi; Jacob P. Feldbauer; Dennis Sabezki; Martin Schwentenwein; Ercan Cakmak; Michael J. Lance; Michelle K. Kidder; Marco C. Martinez; Shawn M. Allan; Beth L. Armstrong

doi:10.1016/j.jeurceramsoc.2025.117867

Laser-induced slip casting as an additive manufacturing approach for silicon carbide

Corson L. Cramer
, Mehdi Mohammadi
, Jacob P. Feldbauer
, Dennis Sabezki
, Martin Schwentenwein
, Ercan Cakmak
, Michael J. Lance
, Michelle K. Kidder
, Marco C. Martinez
, Shawn M. Allan
, Beth L. Armstrong

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

Abstract

This work presents processing silicon carbide (SiC) with the laser-induced slip casting (LIS) additive manufacturing (AM). SiC was stabilized in water with polyethyleneimine (PEI) dispersant, and SiC slurries were made with rheology for LIS printing. High-density ceramic parts were printed, followed by single-step binder burnout and sintering. The printed parts achieved 93–95 % of theoretical density. X-ray computed tomography (XCT) revealed a small distribution of flaws exceeding 100 microns. The mechanical properties were measured in both parallel and perpendicular to the printing layers, and the orientation with layers perpendicular to the bending moment resulted in higher strength compared to the parallel direction. Porosity resulting from processing and large inclusions of boron carbide (B4C) were the root cause of failure in the measured samples. Despite these defects through this effort, this new approach demonstrates promise for green forming of SiC with densities greater than 95 % theoretical and tensile strengths above 250 MPa.

Original language	English
Article number	117867
Journal	Journal of the European Ceramic Society
Volume	46
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2025.117867
State	Published - Mar 2026

Funding

This manuscript has been authored by UT-Battelle LLC under Contract No. DE-AC05–00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This manuscript has been authored by UT-Battelle LLC under Contract No. DE-AC05–00OR22725 with the U.S. Department of Energy. The work was performed under the CRADA No. NFE-21–08880. The authors would like to thank Tracie Lowe for help with SEM and Jim Horenburg and Brian Long for help with sample preparation.

Keywords

Additive manufacturing
SiC
Slip

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10.1016/j.jeurceramsoc.2025.117867

Cite this

Cramer, C. L., Mohammadi, M., Feldbauer, J. P., Sabezki, D., Schwentenwein, M., Cakmak, E., Lance, M. J., Kidder, M. K., Martinez, M. C., Allan, S. M., & Armstrong, B. L. (2026). Laser-induced slip casting as an additive manufacturing approach for silicon carbide. Journal of the European Ceramic Society, 46(3), Article 117867. https://doi.org/10.1016/j.jeurceramsoc.2025.117867

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title = "Laser-induced slip casting as an additive manufacturing approach for silicon carbide",

abstract = "This work presents processing silicon carbide (SiC) with the laser-induced slip casting (LIS) additive manufacturing (AM). SiC was stabilized in water with polyethyleneimine (PEI) dispersant, and SiC slurries were made with rheology for LIS printing. High-density ceramic parts were printed, followed by single-step binder burnout and sintering. The printed parts achieved 93–95 \% of theoretical density. X-ray computed tomography (XCT) revealed a small distribution of flaws exceeding 100 microns. The mechanical properties were measured in both parallel and perpendicular to the printing layers, and the orientation with layers perpendicular to the bending moment resulted in higher strength compared to the parallel direction. Porosity resulting from processing and large inclusions of boron carbide (B4C) were the root cause of failure in the measured samples. Despite these defects through this effort, this new approach demonstrates promise for green forming of SiC with densities greater than 95 \% theoretical and tensile strengths above 250 MPa.",

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author = "Cramer, \{Corson L.\} and Mehdi Mohammadi and Feldbauer, \{Jacob P.\} and Dennis Sabezki and Martin Schwentenwein and Ercan Cakmak and Lance, \{Michael J.\} and Kidder, \{Michelle K.\} and Martinez, \{Marco C.\} and Allan, \{Shawn M.\} and Armstrong, \{Beth L.\}",

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doi = "10.1016/j.jeurceramsoc.2025.117867",

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AU - Cramer, Corson L.

AU - Mohammadi, Mehdi

AU - Feldbauer, Jacob P.

AU - Sabezki, Dennis

AU - Schwentenwein, Martin

AU - Cakmak, Ercan

AU - Lance, Michael J.

AU - Kidder, Michelle K.

AU - Martinez, Marco C.

AU - Allan, Shawn M.

AU - Armstrong, Beth L.

PY - 2026/3

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N2 - This work presents processing silicon carbide (SiC) with the laser-induced slip casting (LIS) additive manufacturing (AM). SiC was stabilized in water with polyethyleneimine (PEI) dispersant, and SiC slurries were made with rheology for LIS printing. High-density ceramic parts were printed, followed by single-step binder burnout and sintering. The printed parts achieved 93–95 % of theoretical density. X-ray computed tomography (XCT) revealed a small distribution of flaws exceeding 100 microns. The mechanical properties were measured in both parallel and perpendicular to the printing layers, and the orientation with layers perpendicular to the bending moment resulted in higher strength compared to the parallel direction. Porosity resulting from processing and large inclusions of boron carbide (B4C) were the root cause of failure in the measured samples. Despite these defects through this effort, this new approach demonstrates promise for green forming of SiC with densities greater than 95 % theoretical and tensile strengths above 250 MPa.

AB - This work presents processing silicon carbide (SiC) with the laser-induced slip casting (LIS) additive manufacturing (AM). SiC was stabilized in water with polyethyleneimine (PEI) dispersant, and SiC slurries were made with rheology for LIS printing. High-density ceramic parts were printed, followed by single-step binder burnout and sintering. The printed parts achieved 93–95 % of theoretical density. X-ray computed tomography (XCT) revealed a small distribution of flaws exceeding 100 microns. The mechanical properties were measured in both parallel and perpendicular to the printing layers, and the orientation with layers perpendicular to the bending moment resulted in higher strength compared to the parallel direction. Porosity resulting from processing and large inclusions of boron carbide (B4C) were the root cause of failure in the measured samples. Despite these defects through this effort, this new approach demonstrates promise for green forming of SiC with densities greater than 95 % theoretical and tensile strengths above 250 MPa.

KW - Additive manufacturing

KW - SiC

KW - Slip

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JO - Journal of the European Ceramic Society

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ER -

Laser-induced slip casting as an additive manufacturing approach for silicon carbide

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