Yu Yu
Hydration control in the fabrication of high-density magnesia products via slip casting
Yu, Yu; Gargala, Arkadiusz; Misson, Michael; Chen, George Z.
Authors
Arkadiusz Gargala
Michael Misson
Professor of Electrochemical Technologies GEORGE CHEN GEORGE.CHEN@NOTTINGHAM.AC.UK
Professor of Electrochemical Technologies
Abstract
To tackle the hydration problem in magnesia (MgO) aqueous suspension during slip casting fabrication, we explored the casting performance of four distinct MgO slips. Through the comparison of properties and performance between aqueous and organic MgO slips, we introduced criteria for selecting the appropriate suspension medium to prepare a good MgO slip. Moisture absorption in raw MgO powders leading to Mg(OH)2 formation was observed, undetectable by X-ray diffraction (XRD) but identified through thermogravimetric analysis (TGA). Moisture release occurred at temperature < 100 °C, followed by loosely bound water release between 160 °C and 310 °C, and then Mg(OH)2 decomposition occurred at 310 °C to 430 °C, constituting 1.05, 1.66, and 1.34 wt%, respectively. Subjecting raw powders to pre-firing at 1000 °C led to the formation of larger MgO particles, characterised by a D50 value twice that of the previous size. This transformation shifted their morphology from random rods to more durable spherical shapes, thereby improving their resistance to hydration when subjected to wet ball milling with water. Pre-firing MgO at 1000 °C resulted in a favourable aqueous slip, enabling problem-free casting of small-sized products with high density and purity.
Citation
Yu, Y., Gargala, A., Misson, M., & Chen, G. Z. (2024). Hydration control in the fabrication of high-density magnesia products via slip casting. Materials Advances, 5(17), 6830-6841. https://doi.org/10.1039/D3MA00768E
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 26, 2024 |
Online Publication Date | Jun 27, 2024 |
Publication Date | Sep 7, 2024 |
Deposit Date | Jul 12, 2024 |
Publicly Available Date | Jul 12, 2024 |
Journal | Materials Advances |
Electronic ISSN | 2633-5409 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 5 |
Issue | 17 |
Pages | 6830-6841 |
DOI | https://doi.org/10.1039/D3MA00768E |
Public URL | https://nottingham-repository.worktribe.com/output/37155959 |
Publisher URL | https://pubs.rsc.org/en/Content/ArticleLanding/2024/MA/D3MA00768E |
Files
D3ma00768e
(1.9 Mb)
PDF
Licence
https://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
https://creativecommons.org/licenses/by/3.0/
d3ma00768e (1)
(3.1 Mb)
PDF
Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
Copyright Statement
© 2024 The Author(s). Published by the Royal Society of Chemistry
You might also like
Redox Materials for Electrochemical Capacitors
(2024)
Journal Article
Emerging Molten Salts Based Electrochemical Energy Technologies
(2024)
Journal Article
Downloadable Citations
About Repository@Nottingham
Administrator e-mail: discovery-access-systems@nottingham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search