Particle formation and agglomeration of an alumina–zirconia powder synthesized an supercritical CO2 method

Alumina-20 vol% zirconia doped with 2 mol% yttria composite powders were prepared using a supercritical CO2 method. The powder characteristics were examined by controlling the supercritical conditions: temperature and pressure. The agglomeration degrees (N) for the powders were changed from 1.2 and...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international 2012-03, Vol.38 (2), p.1215-1219
Main Authors: Gocmez, H, Tuncer, M, Uzulmez, I, Sahin, O
Format: Article
Language:English
Subjects:
Agglomerates
Agglomeration
Carbon dioxide
Ceramics
Hardness
Microstructure
Transmission electron microscopy
Unity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Alumina-20 vol% zirconia doped with 2 mol% yttria composite powders were prepared using a supercritical CO2 method. The powder characteristics were examined by controlling the supercritical conditions: temperature and pressure. The agglomeration degrees (N) for the powders were changed from 1.2 and 5.4. As the value N became smaller or close to unity, the powder agglomerates tended to approach their primary powder size. The sintered sample had hardness of 12.5 GPa. SEM and TEM were used to characterise the microstructure and morphology of the prepared powders.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2011.08.051