Approach for sintering nano-sized yttria-stabilised zirconia Online publication date: Mon, 16-Jul-2007
by M. Hasanuzzaman, A. Rafferty, A.G. Olabi, T. Prescott
International Journal of Nanomanufacturing (IJNM), Vol. 1, No. 4, 2007
Abstract: Commercially available nano-sized ZrO2-3mol%Y2O3 (TZ-3Y-EB.) was investigated. Particle size of powder was found to be 1.29 µm, suggesting that the particles agglomerate in water. BET analysis yielded a specific surface area of 14.52 m²/g. The powder had a true density of 5.98 g/cm³ when analysed using helium gas pycnometry. DTA/TGA analysis indicated that binder burnout occurred on heating in the range 300-400°C. An expansion associated with the tetragonal to monoclinic transformation on cooling from 1400°C was observed by dilatometry for unstabilised zirconia but not for TZ-3Y-EB. The density of discs which were sintered across the temperature range 1350°C to 1500°C varied between 6.02 g/cm³ and 6.05 g/cm³, corresponding to 99.12% and 99.49% of theoretical density. Dilatometry showed that a maximum shrinkage rate occurred at 1285°C. X-ray diffraction data revealed that the starting TZ-3Y-EB powder contained some monoclinic zirconia, but that discs sintered from this powder were wholly tetragonal after sintering.
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 Nanomanufacturing (IJNM):
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
Our Blog 
Follow us on Twitter 
Visit us on Facebook