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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
