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Karaeva ME, Savinykh DO, Orlova AI, Khainakov SA, Nokhrin AV, Boldin MS, Garcia-Granda S, Murashov AA, Chuvil’deev VN, Yunin PA, Nazarov AA, Tabachkova NY. (Na, Zr) and (Ca, Zr) Phosphate-Molybdates and Phosphate-Tungstates: I-Synthesis, Sintering and Characterization. MATERIALS (BASEL, SWITZERLAND) 2023; 16:990. [PMID: 36769994 PMCID: PMC9919077 DOI: 10.3390/ma16030990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/29/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Submicron-grade powders of Na1-xZr2(PO4)3-x(XO4)x compounds (hereafter referred to as NZP) and Ca1-xZr2(PO4)3-x(XO4)x compounds (hereafter, CZP), X = Mo, W (0 ≤ x ≤ 0.5) were obtained by sol-gel synthesis. The compounds obtained were studied by X-ray diffraction phase analysis and electron microscopy. An increase in the W or Mo contents was shown to result in an increase in the unit cell volume of the NZP and CZP crystal lattices and in a decrease in the coherent scattering region sizes. Thermal expansion behavior at high temperatures of synthesized NZP and CZP compounds has been investigated. The dependencies of the parameters a and c on the heating temperature, as well as the temperature dependence of the crystal lattice unit cell volume V in the range from the room temperature up to 800 °C, were obtained. The dependencies of the average thermal expansion coefficient (αav) and of the volume coefficient (β) on the W and Mo contents in the compositions of NZP and CZP compounds were studied. Ceramics Na1-xZr2(PO4)3-x(XO4)x with relatively high density (more than 97.5%) were produced by spark plasma sintering (SPS). The increase in the W or Mo contents in the ceramics leads to an increase in the relative density of NZP and to a decrease of the optimum sintering temperature. The mean grain size in the NZP ceramics decreases with increasing W or Mo contents. The study of strength characteristics has revealed that the hardness of the NZP ceramics is greater than 5 GPa, and that the minimum fracture toughness factor was 1 MPa·m1/2.
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Affiliation(s)
- M. E. Karaeva
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - D. O. Savinykh
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - A. I. Orlova
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - S. A. Khainakov
- Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain
| | - A. V. Nokhrin
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - M. S. Boldin
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | | | - A. A. Murashov
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - V. N. Chuvil’deev
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
| | - P. A. Yunin
- Laboratory of Diagnostics of Radiation Defects in Solid State Nanostructure, Institute for Physics of Microstructure, Russian Academy of Science, 603950 Nizhniy Novgorod, Russia
| | - A. A. Nazarov
- Materials Science Department, Physical and Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia
- Laboratory of Diagnostics of Radiation Defects in Solid State Nanostructure, Institute for Physics of Microstructure, Russian Academy of Science, 603950 Nizhniy Novgorod, Russia
| | - N. Y. Tabachkova
- Center Collective Use “Materials Science and Metallurgy”, National University of Science and Technology “MISIS”, 119991 Moscow, Russia
- Laboratory “FIANIT”, Laser Materials and Technology Research Center, A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
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Karaeva ME, Savinykh DO, Orlova AI, Nokhrin AV, Boldin MS, Murashov AA, Chuvil’deev VN, Skuratov VA, Issatov AT, Yunin PA, Nazarov AA, Drozdov MN, Potanina EA, Tabachkova NY. (Na, Zr) and (Ca, Zr) Phosphate-Molybdates and Phosphate-Tungstates: II-Radiation Test and Hydrolytic Stability. MATERIALS (BASEL, SWITZERLAND) 2023; 16:965. [PMID: 36769972 PMCID: PMC9917871 DOI: 10.3390/ma16030965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/27/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
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.
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Affiliation(s)
- 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
- Institute of Nuclear Physics and Engineering, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow 115409, Russia
- Department of Nuclear Physics, Dubna State University, Dubna 181982, Russia
| | - A. T. Issatov
- G.N. Flerov Laboratory of Nuclear Reactions, Joint Institute of Nuclear Research, Dubna 141980, Russia
- International Department of Nuclear Physics, New Materials and Technologies, The Faculty of Physics and Technology, Gumilov Eurasian National University, Nur-Sultan 010000, Kazakhstan
- Laboratory of Nuclear Processes, Nuclear Physics Department, The Institute of Nuclear Physics, Almaty 050032, Kazakhstan
| | - 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
- Laboratory of Diagnostics of Radiation Defects in Solid State Nanostructure, Institute for Physics of Microstructure, Russian Academy of Science, Nizhniy Novgorod 603950, 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
- Laboratory “FIANIT”, Laser Materials and Technology Research Center, A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow 119991, Russia
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Pouchlý V, Talimian A, Kaštyl J, Chvíla M, Ščasnovič E, Betlrán AM, Lozano JG, Galusek D. Transparent LiOH-Doped Magnesium Aluminate Spinel Produced by Spark Plasma Sintering: Effects of Heating Rate and Dopant Concentration. Ann Ital Chir 2023. [DOI: 10.1016/j.jeurceramsoc.2023.01.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Liu B, Sha K, Zhou MF, Song KX, Hu CC, Lu C. Cold sintering assisted CaF2 microwave dielectric ceramics for C-band antenna applications. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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