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Journal articles
An attempt to correlate ion irradiation behaviour and chemical durability of titanate- and zirconate-based ceramics
Abstract : Titanate and zirconate samples from perovskite and pyrochlore families have been submitted to low energy heavy ion irradiation in order to pre-damage their crystalline structure. Samples irradiated below or near their amorphisation threshold were then leached in deionised water at 90 degrees C in static mode while samples irradiated above their amorphisation threshold were leached at 100 degrees C in dynamic mode. Below the amorphisation threshold, only slight effects of the pre-irradiation have been found on the chemical durability of titanate and zirconate from the perovskite family. Above the amorphisation threshold, perovskite surfaces exhibit a stronger hydration and an increase of the growth kinetics of secondary phases identified as TiOOH and ZrOOH compounds mainly. The pre-irradiated pyrochlore (Nd(2)Zr(2)O(7)) exhibits both a higher hydration degree and a higher Nd-Zr surface co-enrichment due to the destabilization of their network by the pre-irradiation. (C) 2008 Elsevier B.V. All rights reserved.
https://hal-upec-upem.archives-ouvertes.fr/hal-00693575
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Submitted on : Wednesday, May 2, 2012 - 6:26:40 PM
Last modification on : Thursday, June 25, 2020 - 2:54:03 PM
Contributor : Admin Lge <>
Submitted on : Wednesday, May 2, 2012 - 6:26:40 PM
Last modification on : Thursday, June 25, 2020 - 2:54:03 PM