Fabrication of transparent yttria ceramics by spark plasma sintering

E. Korkmaz*, F. Sahin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Rapid densification of yttria (Y2O3) ceramics without sintering aids via spark plasma sintering at relatively low temperature of 1300°C for 40 minutes at two-step pressure profile, followed by post-annealing at 1050°C for 6 hours in air was attempted. Effect of preload pressure on microstructure, Vickers hardness, fracture toughness and optical in-line transmittance was investigated. Densification during spark plasma sintering did not involve any phase transformation and all phases have shown cubic structure according to X-ray analysis. The highest hardness and fracture toughness value was recorded to be 7.60 ± 0.18 GPa and 1.16 ± 0.07 MPa m1/2 with 10 MPa preload and 100 MPa final load. In addition to this, the highest transmittance with a value of 76.7% at a wavelength of 2000 nm was obtained when studied with 10 MPa preload and 100 MPa final load.

Original languageEnglish
Pages (from-to)460-462
Number of pages3
JournalActa Physica Polonica A
Issue number3
Publication statusPublished - Mar 2017

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© 2017, Polish Academy of Sciences. All rights reserved.


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