Swift heavy ion induced phase transformations in partially stabilized ZrO2

The paper reports on the effect of irradiation by swift heavy Xe ions on partially stabilized zirconia ceramics. XRD analysis identified two tetragonal phases with different degrees of tetragonality (transformable t phase and non-transformable metastable t” phase). TEM analysis of the irradiated sam...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2022-03, Vol.192, p.109917, Article 109917
Main Authors: Ghyngazov, S.А., Boltueva, V.А., O'Connell, J.H., Vershinina, T.N., Kirilkin, N.S., Rymzhanov, R.A., Skuratov, V.A., Surzhikov, А.P.
Format: Article
Language:English
Subjects:
Ceramics
Compressive properties
Ferroelastic transformation
Fluence
Hardening
Heavy ions
Indentation
Irradiation
Microhardness
Modulus of elasticity
Nanohardness
Nanoindentation
Partial stabilization
Partially stabilized zirconia
Phase transitions
Swift heavy ions
Transmission electron microscopy
XRD analysis
Zirconium dioxide
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Summary:The paper reports on the effect of irradiation by swift heavy Xe ions on partially stabilized zirconia ceramics. XRD analysis identified two tetragonal phases with different degrees of tetragonality (transformable t phase and non-transformable metastable t” phase). TEM analysis of the irradiated samples showed that the efficiency of high-energy ion track formation decreases when the fluence and, hence, the fraction of t” phase increase. Changes in nanohardness, elastic modulus, and microhardness of partially stabilized ZrO2 ceramics before and after irradiation were investigated by nanoindentation and microindentation techniques. Mechanisms of ceramic layer hardening associated with phase rearrangement, compressive stress accumulation, and transformation and ferroelastic hardening are discussed. •Formation of metastable t” phase observed in PSZ irradiated with swift heavy ions.•TEM reveals different response of the t” phase to irradiation in comparison to t phase.•The dose dependence of PSZ hardness correlates with the fraction of t” phase.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2021.109917