Title data
Held, Alexander ; Puchas, Georg ; Müller, Ferdinand ; Krenkel, Walter:
Direct ink writing of water-based C–SiC pastes for the manufacturing of SiSiC components.
In: Open Ceramics.
Vol. 5
(2021)
.
- No. 100054.
ISSN 2666-5395
DOI: https://doi.org/10.1016/j.oceram.2020.100054
Abstract in another language
As a feasibility study, a direct ink writing process using a conventional FDM-printer and colloidal C–SiC pastes was developed. The pastes have a low content of organic additives, which enables the omission of a pyrolysis step, i.e. the green parts can undergo the liquid silicon infiltration process directly after drying.
The rheological behavior of the pastes was investigated regarding their viscosity, thixotropy and yield point. By analyzing important effects of 3D-printing, such as bridging and the possibility to print overhangs, the printability was determined. The near-net shape ability of the process was studied by comparing the dimensions after each processing step.
The microstructure of the samples showed no detectable microstructural anomalies in this interface area. The phase analysis of the samples showed no residual carbon in the SiSiC parts. Printed SiSiC parts reached flexural strengths of 190 MPa, a hardness of 15.7 GPa and a Young’s Modulus of 246 GPa.
Further data
Item Type: | Article in a journal |
---|---|
Refereed: | Yes |
Keywords: | Colloidal inks; Additive manufacturing; Direct ink writing; SiSiC; Liquid silicon infiltration; Near-net shape |
Institutions of the University: | Faculties > Faculty of Engineering Science > Former Professors > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Walter Krenkel Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Ceramic Materials Faculties > Faculty of Engineering Science > Former Professors |
Result of work at the UBT: | Yes |
DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
Date Deposited: | 25 Jan 2021 12:33 |
Last Modified: | 19 Oct 2022 10:43 |
URI: | https://eref.uni-bayreuth.de/id/eprint/62327 |