Polymer‐derived silicon nitride ceramics by digital light processing based additive manufacturing

In this work, silicon nitride ceramic components with simple cuboid and complex honeycomb and lattice structures from preceramic polymers were fabricated by using digital light processing (DLP) based additive manufacturing and pyrolysis. The photosensitive precursor for DLP based additive manufactur...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2019-09, Vol.102 (9), p.5117-5126
Main Authors: Wang, Min, Xie, Chen, He, Rujie, Ding, Guojiao, Zhang, Keqiang, Wang, Gang, Fang, Daining
Format: Article
Language:English
Subjects:
Acrylic resins
Additive manufacturing
Ceramic honeycombs
Ceramics
Compressive properties
digital light processing
Photosensitivity
polymer derived ceramics
Polysilazane
Pyrolysis
Si3N4
Silicon nitride
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Summary:In this work, silicon nitride ceramic components with simple cuboid and complex honeycomb and lattice structures from preceramic polymers were fabricated by using digital light processing (DLP) based additive manufacturing and pyrolysis. The photosensitive precursor for DLP based additive manufacturing was prepared by mixing high ceramic yield polysilazane with commercial acrylic resin and photoinitiator. The material formulation and the structure of the green body were characterized by using FTIR. Si3N4 ceramic cuboid, 2D‐structured Si3N4 ceramic honeycomb, and 2D‐structured Si3N4 ceramic lattice with high precision were fabricated. The DLP‐prepared specimens were pyrolyzed at different temperatures, and the crystalline phases after pyrolysis were analyzed by using XRD. The optimal pyrolysis temperature was found to be 1400°C.microstructures were characterized by using SEM. The compressive behavior of the complex‐shaped Si3N4 ceramic structures was measured and discussed in detail.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.16389