Densification of zirconia-hematite nanopowders

Raming, T.P. and Winnubst, A.J.A. and Zyl van, W.E. and Verweij, H. (2003) Densification of zirconia-hematite nanopowders. Journal of the European Ceramic Society, 23 (7). pp. 1053-1060. ISSN 0955-2219

PDF
Restricted to UT campus only: Request a copy
297Kb

Abstract:	The densification of dual-phase yttria-doped tetragonal zirconia polycrystals (Y-TZP) and -Fe2O3 (hematite) composite powders is described. Different powder synthesis methods, different forms of dry compaction processes, and two sinter methods (pressureless sintering and sinterforging) were compared. The homogeneity and average grain sizes of the sintered compacts were determined with SEM/EDX. Compacts produced from homogeneous powders that were prepared by the co-precipitation (CP) method showed large-scale phase segregation and grain growth during sintering. Compacts made from the less homogeneous sequentially precipitated (SP) powders showed far less phase segregation and relatively small grain growth during sintering. Dense (>96%) nano/nano zirconia-hematite composites were made with average grain sizes of 80 nm by sinterforging at 1000 °C and 100 MPa.
Item Type:	Article
Copyright:	© 2002 Elsevier Science
Faculty:	Science and Technology (TNW)
Research Group:	Inorganic Membranes (IM)
Link to this item:	http://purl.utwente.nl/publications/40714
Official URL:	http://dx.doi.org/10.1016/S0955-2219(02)00272-8
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Repository Staff Only: item control page

Metis ID: 214004