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Advances in Materials Science and Engineering
Volume 2017, Article ID 2748070, 9 pages
Research Article

Optimization of Alumina Slurry for Oxide-Oxide Ceramic Composites Manufactured by Injection Molding

NSERC-Safran Chair on 3D Composites for Aerospace, Department of Mechanical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Centre-Ville Station, Montréal, QC, Canada H3C 3A7

Correspondence should be addressed to Catherine Billotte; ac.ltmylop@ettollib.enirehtac

Received 13 March 2017; Revised 8 June 2017; Accepted 5 July 2017; Published 7 August 2017

Academic Editor: Marco Rossi

Copyright © 2017 Catherine Billotte et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper focuses on the rheological study of an alumina suspension intended for the manufacturing of oxide-oxide composites by flexible injection. Given the production constraints, it is required to have stable suspension with low viscosity and a Newtonian behavior. This is achieved with a concentration of nitric acid between 0.08 wt% and 0.2 wt% and amount of 3 wt% of PVA binder. The maximum loading of the suspension of 47 vol% suggests that there is no structure development within the suspension with optimized concentration of acid and PVA.