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Polymer‐derived SiCN cellular structures from replica of 3D printed lattices
Author(s) -
Jana Prasanta,
Santoliquido Oscar,
Ortona Alberto,
Colombo Paolo,
Sorarù Gian Domenico
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15533
Subject(s) - stereolithography , materials science , pyrolysis , fabrication , replica , ceramic , porosity , polymer , composite material , inert gas , shrinkage , 3d printing , inert , chemical engineering , chemistry , art , visual arts , engineering , medicine , alternative medicine , organic chemistry , pathology
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.