Preparation and characterization of multiphase ceramic designer waste forms

Abstract The long-term performance, or resistance to elemental release, is the defining characteristic of a nuclear waste form. In the case of multiphase ceramic waste forms, correlating the long-term performance of multiphase ceramic waste forms in the environment to accelerated chemical durability...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Braeden M. Clark, Priyatham Tumurugoti, Shanmugavelayutham K. Sundaram, Jake W. Amoroso, James C. Marra
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f8823b84fb08479b8d914b5029153df8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f8823b84fb08479b8d914b5029153df8
record_format	dspace
spelling	oai:doaj.org-article:f8823b84fb08479b8d914b5029153df82021-12-02T11:37:27ZPreparation and characterization of multiphase ceramic designer waste forms10.1038/s41598-021-84014-12045-2322https://doaj.org/article/f8823b84fb08479b8d914b5029153df82021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84014-1https://doaj.org/toc/2045-2322Abstract The long-term performance, or resistance to elemental release, is the defining characteristic of a nuclear waste form. In the case of multiphase ceramic waste forms, correlating the long-term performance of multiphase ceramic waste forms in the environment to accelerated chemical durability testing in the laboratory is non-trivial owing to their complex microstructures. The fabrication method, which in turn affects the microstructure, is further compounding when comparing multiphase ceramic waste forms. In this work, we propose a “designer waste form” prepared via spark plasma sintering to limit interaction between phases and grain growth during consolidation, leading to monolithic high-density waste forms, which can be used as reference materials for comparing the chemical durability of multiphase waste forms. Designer waste forms containing varying amounts of hollandite in the presence of zirconolite and pyrochlore in a fixed ratio were synthesized. The product consistency test (PCT) and vapor hydration test (VHT) were used to assess the leaching behavior. Samples were unaffected by the VHT after 1500 h. As measured by the PCT, the fractional Cs release decreased as the amount of hollandite increased. Elemental release from the zirconolite and pyrochlore phases did not appear to significantly contribute to the elemental release from the hollandite phase in the designer waste forms.Braeden M. ClarkPriyatham TumurugotiShanmugavelayutham K. SundaramJake W. AmorosoJames C. MarraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Braeden M. Clark Priyatham Tumurugoti Shanmugavelayutham K. Sundaram Jake W. Amoroso James C. Marra Preparation and characterization of multiphase ceramic designer waste forms
description	Abstract The long-term performance, or resistance to elemental release, is the defining characteristic of a nuclear waste form. In the case of multiphase ceramic waste forms, correlating the long-term performance of multiphase ceramic waste forms in the environment to accelerated chemical durability testing in the laboratory is non-trivial owing to their complex microstructures. The fabrication method, which in turn affects the microstructure, is further compounding when comparing multiphase ceramic waste forms. In this work, we propose a “designer waste form” prepared via spark plasma sintering to limit interaction between phases and grain growth during consolidation, leading to monolithic high-density waste forms, which can be used as reference materials for comparing the chemical durability of multiphase waste forms. Designer waste forms containing varying amounts of hollandite in the presence of zirconolite and pyrochlore in a fixed ratio were synthesized. The product consistency test (PCT) and vapor hydration test (VHT) were used to assess the leaching behavior. Samples were unaffected by the VHT after 1500 h. As measured by the PCT, the fractional Cs release decreased as the amount of hollandite increased. Elemental release from the zirconolite and pyrochlore phases did not appear to significantly contribute to the elemental release from the hollandite phase in the designer waste forms.
format	article
author	Braeden M. Clark Priyatham Tumurugoti Shanmugavelayutham K. Sundaram Jake W. Amoroso James C. Marra
author_facet	Braeden M. Clark Priyatham Tumurugoti Shanmugavelayutham K. Sundaram Jake W. Amoroso James C. Marra
author_sort	Braeden M. Clark
title	Preparation and characterization of multiphase ceramic designer waste forms
title_short	Preparation and characterization of multiphase ceramic designer waste forms
title_full	Preparation and characterization of multiphase ceramic designer waste forms
title_fullStr	Preparation and characterization of multiphase ceramic designer waste forms
title_full_unstemmed	Preparation and characterization of multiphase ceramic designer waste forms
title_sort	preparation and characterization of multiphase ceramic designer waste forms
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f8823b84fb08479b8d914b5029153df8
work_keys_str_mv	AT braedenmclark preparationandcharacterizationofmultiphaseceramicdesignerwasteforms AT priyathamtumurugoti preparationandcharacterizationofmultiphaseceramicdesignerwasteforms AT shanmugavelayuthamksundaram preparationandcharacterizationofmultiphaseceramicdesignerwasteforms AT jakewamoroso preparationandcharacterizationofmultiphaseceramicdesignerwasteforms AT jamescmarra preparationandcharacterizationofmultiphaseceramicdesignerwasteforms
_version_	1718395798464495616

Preparation and characterization of multiphase ceramic designer waste forms

Ejemplares similares