Preparation of fine-grained ceramics by hot-pressing of Ce0.09Zr0.91O2/MgO/Al2O3 nanopowder
- Authors: Trusova E.A.1, Khrushcheva A.A.1, Lysenkov A.S.1, Alad’ev N.A.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science
- Issue: Vol 52, No 4 (2016)
- Pages: 400-404
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157479
- DOI: https://doi.org/10.1134/S0020168516040117
- ID: 157479
Cite item
Abstract
We have studied the effect of hot-pressing conditions (different pressure rise rates and isothermal holding temperatures in the range 1450–1550°C) on the microstructure of ceramics produced from nanopowder with the composition Ce0.09Zr0.91O2/MgAl6O10/γ-Al2O3 (20.6, 37.4, and 42.0 wt %, respectively). Firing at 1450°C for 1 h made it possible to obtain fine-grained ceramics with less than 3 μm in grain size. The compaction pressure rise rate was shown to be a key parameter under such thermal conditions (20 + 10°C/min → 1450°C). Grain growth was prevented most effectively when the maximum load, 30 MPa, was reached at a temperature of 1000°C. Under such conditions, the grain size was 0.4–0.8 μm and the relative density reached 98.8%.
About the authors
E. A. Trusova
Baikov Institute of Metallurgy and Materials Science
Author for correspondence.
Email: trusova03@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119991
A. A. Khrushcheva
Baikov Institute of Metallurgy and Materials Science
Email: trusova03@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119991
A. S. Lysenkov
Baikov Institute of Metallurgy and Materials Science
Email: trusova03@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119991
N. A. Alad’ev
Baikov Institute of Metallurgy and Materials Science
Email: trusova03@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119991
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