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Hierarchical porous ceramics via two-stage freeze casting of preceramic polymers

Arai, Noriaki and Faber, Katherine T. (2019) Hierarchical porous ceramics via two-stage freeze casting of preceramic polymers. Scripta Materialia, 162 . pp. 72-76. ISSN 1359-6462. https://resolver.caltech.edu/CaltechAUTHORS:20181107-085123398

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Abstract

Freeze-cast porous ceramics are of interest due to a broad range of applications such as filters, bioscaffolds, and catalyst supports. However, achieving the desired mechanical strength while retaining sufficient functionality, such as permeability, has been challenging. In this work, hierarchical structures of bridged lamellar pores were created via two-stage freeze casting of a preceramic polymer to enhance compressive strength of the resulting SiOC. It has been shown that the bridge density can be controlled by changing the concentration of preceramic polymer in solution and compressive strength increased approximately threefold while permeability constants ranged from 9.63 × 10^(−13) to 3.96 × 10^(−12) m^2.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.scriptamat.2018.10.037DOIArticle
ORCID:
AuthorORCID
Faber, Katherine T.0000-0001-6585-2536
Additional Information:© 2018 Acta Materialia Inc. Published by Elsevier Ltd. Received 24 September 2018, Revised 24 October 2018, Accepted 25 October 2018, Available online 7 November 2018. This work was supported by the National Science Foundation under DMR-1411218. Declaration of interest: None.
Funders:
Funding AgencyGrant Number
NSFDMR-1411218
Record Number:CaltechAUTHORS:20181107-085123398
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181107-085123398
Official Citation:Noriaki Arai, Katherine T. Faber, Hierarchical porous ceramics via two-stage freeze casting of preceramic polymers, Scripta Materialia, Volume 162, 2019, Pages 72-76, ISSN 1359-6462, https://doi.org/10.1016/j.scriptamat.2018.10.037. (http://www.sciencedirect.com/science/article/pii/S1359646218306663)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90693
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:07 Nov 2018 17:49
Last Modified:03 Oct 2019 20:27

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