Chemical Stability of the CsZr2(PO4)3 Phosphate with the Kosnarite Structure in Various Environments

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Abstract

The CsZr2(PO4)3 phosphate isostructural with the mineral kosnarite has been prepared via sol–gel synthesis at 900°C, and ceramics based on this phosphate have been produced by spark plasma sintering. The relative density of the ceramics has been determined to be 75.5%. The chemical stability of the ceramic materials has been assessed at 90°C in static mode in distilled and mineral water, weakly acidic solution, and weakly alkaline solution. The minimum rates of Cs leaching were ~10–5 to 10–4 g/(cm2 day). We have assessed the effect of contact medium on the mechanism of cesium leaching from the CsZr2(PO4)3 ceramics.

About the authors

L. S. Alekseeva

Lobachevsky State University

Email: golovkina_lyudmila@mail.ru
Россия, 603022, Нижний Новгород, пр. Гагарина, 23

A. V. Nokhrin

Lobachevsky State University of Nizhny Novgorod

Email: nokhrin@nifti.unn.ru
Russia, 603022, Nizhny Novgorod

A. I. Orlova

Lobachevsky State University

Email: golovkina_lyudmila@mail.ru
Russia, Nizhniy Novgorod, 603022

M. S. Boldin

Lobachevsky State University of Nizhny Novgorod

Email: nokhrin@nifti.unn.ru
Russia, 603022, Nizhny Novgorod

A. V. Voronin

Lobachevsky State University

Email: golovkina_lyudmila@mail.ru
603022, Nizhny Novgorod, Russia

A. A. Murashov

Lobachevsky State University

Email: golovkina_lyudmila@mail.ru
603022, Nizhny Novgorod, Russia

V. N. Chuvil’deev

Lobachevsky State University of Nizhny Novgorod

Author for correspondence.
Email: nokhrin@nifti.unn.ru
Russia, 603022, Nizhny Novgorod

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Copyright (c) 2023 Л.С. Алексеева, А.В. Нохрин, А.И. Орлова, М.С. Болдин, А.В. Воронин, А.А. Мурашов, В.Н. Чувильдеев