Stabilization of ZrO2 Concentrate by Rare Earth Elements (La, Nd, Pr, Ce)
- Authors: Kul’met’eva V.B.1, Porozova S.E.1, Gilev V.G.1, Vokhmyanin D.S.1
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Affiliations:
- FGBOU VO Perm’ National research Polytechnic University
- Issue: Vol 59, No 6 (2019)
- Pages: 599-605
- Section: Article
- URL: https://bakhtiniada.ru/1083-4877/article/view/249174
- DOI: https://doi.org/10.1007/s11148-019-00280-7
- ID: 249174
Cite item
Abstract
The effect of annealing and sintering temperature on phase transformation of ZrO2 is studied in relation to REE concentrate content using differential thermal analysis, Raman spectroscopy and x-ray diffraction. It is shown that introduction of REE concentrate in an amount of more than 15 wt.% stabilizes ZrO2 tetragonal phase solely at below 1200 °C. A further increase in temperature leads to destabilization of the tetragonal phase with formation of the monoclinic and cubic phases of the Ln2Zr2O7 type isostructural compounds (n = La, Nd, ...) with a pyrochlore structure.
About the authors
V. B. Kul’met’eva
FGBOU VO Perm’ National research Polytechnic University
Author for correspondence.
Email: keramik@pm.pstu.ac.ru
Russian Federation, Perm’
S. E. Porozova
FGBOU VO Perm’ National research Polytechnic University
Email: keramik@pm.pstu.ac.ru
Russian Federation, Perm’
V. G. Gilev
FGBOU VO Perm’ National research Polytechnic University
Email: keramik@pm.pstu.ac.ru
Russian Federation, Perm’
D. S. Vokhmyanin
FGBOU VO Perm’ National research Polytechnic University
Email: keramik@pm.pstu.ac.ru
Russian Federation, Perm’
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