Preparation of zirconia-ceria powders by coprecipitation of a mixed zirconium carbonate in water with urea Online publication date: Sat, 06-Nov-2010
by E. Luccini, S. Meriani, O. Sbaizero
International Journal of Materials and Product Technology (IJMPT), Vol. 4, No. 2, 1989
Abstract: Ceria zirconia precursors were obtained by applying the urea hydrolysis method to Zr-oxychloride and Ce-nitrate solutions. Dewatering-dying procedures, such as freeze drying (FD) and acetone-toluene-acetone (ATA), were compared with the usual thermal method to assess their suitability for yielding fine, aggregate-free powders for the preparation of ceria-zirconia sinters. The characteristics of the powders before and after calcinations are discussed. The advantage of the ATA method is based on the fact that the formation of hard agglomerates is avoided, high specific surface is achieved and the tetragonal form was the only phase crystallizing on calcination of the chemical precursor.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com