The influence of a microwave hybrid heat treatment (MHH) on the surface and in-depth mineralogical transformation of pre-sintered 3Y-PSZ was investigated. 3Y-PSZ samples were prepared by slip casting and sintered by conventional firing (1270 °C). Then, different MHH treatments from 5 to 15 min. at 1200 °C were applied to obtain a fully stabilized 3Y-TZP. The monoclinic fraction depth profiles in the first micrometres (up to 5) of thickness were investigated by means of the grazing incident X-ray diffraction technique (GIXRD). A good sintering degree with practically nil closed porosity and grain growth was achieved after MHH of 15 min. MHH increases the tetragonal phase content both in the surface and in-depth, reducing completely the monoclinic phase shell typically found after conventional sintering. A new parabolic model is proposed for the convoluted monoclinic fraction depth profile, which through the value of its horizontal asymptote allows the determination of the monoclinic shell thickness.

Insight into t->m transition of MW treated 3Y-PSZ ceramics by grazing incidence X-ray diffraction / Riva, V.; Boccaccini, D.; Cannio, M.; Maioli, M.; Valle, M.; Romagnoli, M.; Mortalo, C.; Leonelli, C.. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - 42:1(2022), pp. 227-237. [10.1016/j.jeurceramsoc.2021.09.054]

Insight into t->m transition of MW treated 3Y-PSZ ceramics by grazing incidence X-ray diffraction

Boccaccini D.
Membro del Collaboration Group
;
Cannio M.
Methodology
;
Maioli M.
Investigation
;
Romagnoli M.
Data Curation
;
Leonelli C.
Supervision
2022

Abstract

The influence of a microwave hybrid heat treatment (MHH) on the surface and in-depth mineralogical transformation of pre-sintered 3Y-PSZ was investigated. 3Y-PSZ samples were prepared by slip casting and sintered by conventional firing (1270 °C). Then, different MHH treatments from 5 to 15 min. at 1200 °C were applied to obtain a fully stabilized 3Y-TZP. The monoclinic fraction depth profiles in the first micrometres (up to 5) of thickness were investigated by means of the grazing incident X-ray diffraction technique (GIXRD). A good sintering degree with practically nil closed porosity and grain growth was achieved after MHH of 15 min. MHH increases the tetragonal phase content both in the surface and in-depth, reducing completely the monoclinic phase shell typically found after conventional sintering. A new parabolic model is proposed for the convoluted monoclinic fraction depth profile, which through the value of its horizontal asymptote allows the determination of the monoclinic shell thickness.
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Insight into t->m transition of MW treated 3Y-PSZ ceramics by grazing incidence X-ray diffraction / Riva, V.; Boccaccini, D.; Cannio, M.; Maioli, M.; Valle, M.; Romagnoli, M.; Mortalo, C.; Leonelli, C.. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - 42:1(2022), pp. 227-237. [10.1016/j.jeurceramsoc.2021.09.054]
Riva, V.; Boccaccini, D.; Cannio, M.; Maioli, M.; Valle, M.; Romagnoli, M.; Mortalo, C.; Leonelli, C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1255058
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