(Na, Zr) and (Ca, Zr) Phosphate-Molybdates and Phosphate-Tungstates: II–Radiation Test and Hydrolytic Stability
M. E. Karaeva,
D. O. Savinykh,
A. I. Orlova,
A. V. Nokhrin,
M. S. Boldin,
A. A. Murashov,
V. N. Chuvil’deev,
V. A. Skuratov,
A. T. Issatov,
P. A. Yunin,
A. A. Nazarov,
M. N. Drozdov,
E. A. Potanina,
N. Y. Tabachkova
Affiliations
M. E. Karaeva
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
D. O. Savinykh
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
A. I. Orlova
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
A. V. Nokhrin
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
M. S. Boldin
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
A. A. Murashov
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
V. N. Chuvil’deev
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
V. A. Skuratov
G.N. Flerov Laboratory of Nuclear Reactions, Joint Institute of Nuclear Research, Dubna 141980, Russia
A. T. Issatov
G.N. Flerov Laboratory of Nuclear Reactions, Joint Institute of Nuclear Research, Dubna 141980, Russia
P. A. Yunin
Laboratory of Diagnostics of Radiation Defects in Solid State Nanostructure, Institute for Physics of Microstructure, Russian Academy of Science, Nizhniy Novgorod 603950, Russia
A. A. Nazarov
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
M. N. Drozdov
Laboratory of Diagnostics of Radiation Defects in Solid State Nanostructure, Institute for Physics of Microstructure, Russian Academy of Science, Nizhniy Novgorod 603950, Russia
E. A. Potanina
Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603022, Russia
N. Y. Tabachkova
Center Collective Use “Materials Science and Metallurgy”, National University of Science and Technology “MISIS”, Moscow 119991, Russia
This paper introduces the results of hydrolytic stability tests and radiation resistance tests of phosphate molybdates and phosphate tungstates Na1−xZr2(PO4)3−x(XO4)x, X = Mo, W (0 ≤ x ≤ 0.5). The ceramics characterized by relatively high density (more than 97.5%) were produced by spark plasma sintering (SPS) of submicron powders obtained by sol–gel synthesis. The study focused on hydrolytic resistance of the ceramics in static mode at room temperature. After 28 days of testing in distilled water, the normalized leaching rate was determined. It was found that the ceramics demonstrated high hydrolytic resistance in static mode: the normalized leaching rates for Mo- and W-containing ceramics were 31·10−6 and 3.36·10−6 g·cm−2·day−1, respectively. The ceramics demonstrated high resistance to irradiation with 167 MeV Xe+26 multiple-charged ions at fluences ranging from 1·1012 to 6·1013 cm−2. The Mo-containing Na0.5Zr2(PO4)2.5(XO4)0.5 ceramics were shown to have higher radiation resistance than phosphate tungstates. Radiation was shown to trigger an increase in leaching rates for W and Mo in the crystal structure of NZP ceramics.
