Ortona, Alberto and Santoliquido, Oscar and Colombo, Paolo and Sorarù, Gian Domenico (2018) Polymer‐derived SiCN cellular structures from replica of 3D printed lattices. Journal of the American Ceramic Society. ISSN 1551-2916
Full text not available from this repository.Abstract
In comparison with metals and polymers, ceramics and/or carbon are more difficult to process into well‐defined cellular architectures (e.g., cubic, tetrakaidecadehron, etc.) using Additive Manufacturing techniques. The present work reports a simple method for generating complex and precise SiCN ceramic lattices using a preceramic polymer and applying the replica approach to structures fabricated using stereolithography of plastic materials, with the associated ease of fabrication. Three‐dimensional printed plastic lattices impregnated with a polysilazane were converted to SiCN by pyrolysis at 1000°C in inert atmosphere. In spite of the high amount of mass loss (~58%) and volume shrinkage (~65%), the impregnated structures did not collapse during pyrolysis, leading to highly porous (total porosity ~93 vol%) components possessing suitable strength for handling and potential use as lightweight components.
| Item Type: | Scientific journal article, Newspaper article or Magazine article |
|---|---|
| Subjects: | Physical sciences > Materials science Engineering Engineering > Mechanical engineering |
| Department/unit: | Dipartimento tecnologie innovative > Istituto di ingegneria meccanica e tecnologia dei materiali |
| Depositing User: | Marco Pelanconi |
| Date Deposited: | 25 Jun 2020 19:27 |
| Last Modified: | 25 Jun 2020 19:27 |
| URI: | http://repository.supsi.ch/id/eprint/11676 |
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