Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14572
Title: Macroporous polymer-derived ceramics produced by standard and additive manufacturing methods: How the shaping technique can affect their high temperature thermal behavior
Authors: Zambotti,A.
Kulkarni,A.
Semerci,T.
Vakifahmetoglu,C.
Pelanconi,M.
Bottacin,S.
Sorarù,G.D.
Keywords: 3D printing
Fused filament fabrication
Heat exchanger
Powder bed fusion
Preceramic polymer
Replica
Silicon oxycarbide
Publisher: Elsevier B.V.
Abstract: This work proposes the processing of porous ceramic lattices via three polymer-derived ceramic routes, namely powder bed fusion and infiltration, fused filament fabrication and replica, and a direct replica of a foamed polymer. A common feature in the processing of these lattices is the use of the same polysilazane as the preceramic source for the Si-C-N-O network that builds up during ceramization. We adopted rotated cube, honeycomb and randomized cellular geometries as a matter of comparison for thermal exchange when an air flow is forced through the structures up to 1050 °C. The three procedural pathways are discussed in their limitations regarding geometry, polymer-to-ceramic conversion, high-temperature heat exchange performance and durability. In this regard, while rotated cube geometry results in the best thermal exchange and highest pressure drop, we show a correlation between chemical composition and high temperature oxidation of the Si-C-N-O network, possibly attributed to the selection of the processing routes. © 2024 The Authors
Description: Zambotti, Andrea/0000-0002-8653-055X
URI: https://doi.org/10.1016/j.oceram.2024.100603
ISSN: 2666-5395
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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