Yifei paper JECS_9382_edit_report.pdf (553.62 kB)

Comparison of spray freeze dried nanozirconia granules using ultrasonication and twin-fluid atomisation

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posted on 09.11.2015 by Yifei Zhang, J.G.P. Binner, Chris Rielly, Vaidhy Vaidhyanathan
Granulation of nanostructured 3. mol% yttria stabilised zirconia using spray freeze drying was investigated to achieve flowable and crushable granules for subsequent die pressing. Commercial nanosuspension consisting of ~16. nm particles was concentrated to ~55. wt% solids content via a patented technique, followed by spraying into liquid nitrogen using either a vibrating ultrasonic probe or a twin-fluid atomizer and freeze dried to yield spherical granules. Control of the granule size fractions was investigated by changing the amplitude and the feeding rate of the nanosuspension during ultrasonication, whilst the flow rate of compressed air used for spraying was varied during twin-fluid atomisation. Granules retaining good crushability for pressing were in a size range of 125-250. μm, which were achieved with ~60. wt% yields using the atomisation route, whilst a maximum of 35. wt% of granules in this size range were produced in previous research using ultrasonication. © 2013 Elsevier Ltd.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of the European Ceramic Society

Volume

34

Issue

4

Pages

1001 - 1008

Citation

ZHANG, Y. ...et al., 2014. Comparison of spray freeze dried nanozirconia granules using ultrasonication and twin-fluid atomisation. Journal of the European Ceramic Society, 34(4), pp. 1001-1008.

Publisher

© Elsevier Ltd.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

This paper was accepted for publication in the journal Journal of the European Ceramic Society and the definitive published version is available at: http://dx.doi.org/10.1016/j.jeurceramsoc.2013.10.033

ISSN

0955-2219

Language

en

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