Study of the stability of the structural properties of CeO2 microparticles to helium irradiation
The work is devoted to the study of the radiation resistance of CeO2 microparticles to irradiation with low-energy Не2+ ions with an energy of 40 keV, the irradiation fluence was 1015–1016 ion/cm2. The study found that, in contrast to the initial spherical microparticles, irradiated microparticles a...
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| Veröffentlicht in: | Surface & coatings technology 2020-02, Vol.383, p.125286, Article 125286 |
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| creator | Zdorovets, M.V. Kozlovskiy, A.L. |
| description | The work is devoted to the study of the radiation resistance of CeO2 microparticles to irradiation with low-energy Не2+ ions with an energy of 40 keV, the irradiation fluence was 1015–1016 ion/cm2. The study found that, in contrast to the initial spherical microparticles, irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions. According to energy dispersive analysis, an increase in the irradiation fluence leads to an increase in the oxygen content and its uneven distribution over the structure, which leads to a violation of the stoichiometry of the microparticles under study. It was found that the displacement of atoms from the lattice sites as a result of irradiation, as well as their subsequent migration, leads to a change in interplanar spacings and the appearance of distortions and deformations of the crystal lattice. According to X-ray diffraction data, changes in the crystal structure of the microparticles under study are associated with deformation and distortion of the crystal structure due to migration of defects and an increase in the vacancy density of oxygen defects, as well as partial swelling of the crystal structure.
•Study of the stability of the structural properties of CeO2•Irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions.•Data on changes in elemental composition and stoichiometric ratio•Changes in the mean square displacements of atoms and the concentration of defects in the structure |
| doi_str_mv | 10.1016/j.surfcoat.2019.125286 |
| format | Article |
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•Study of the stability of the structural properties of CeO2•Irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions.•Data on changes in elemental composition and stoichiometric ratio•Changes in the mean square displacements of atoms and the concentration of defects in the structure</description><identifier>ISSN: 0257-8972</identifier><identifier>EISSN: 1879-3347</identifier><identifier>DOI: 10.1016/j.surfcoat.2019.125286</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Agglomerates ; Cerium dioxide ; Cerium oxides ; Crystal defects ; Crystal lattices ; Crystal structure ; Deformation ; Displacements (lattice) ; Fluence ; Inclusions ; Irradiation ; Lattice sites ; Lattice vacancies ; Microparticles ; Nuclear power ; Oxygen content ; Radiation tolerance ; Sintering (powder metallurgy) ; Stoichiometry ; Structural stability ; Swelling</subject><ispartof>Surface & coatings technology, 2020-02, Vol.383, p.125286, Article 125286</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Feb 15, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c340t-e032b9259bd6a567c9690dc817e895dfc1360a0967cb46b7a205bcc67c2f67a3</citedby><cites>FETCH-LOGICAL-c340t-e032b9259bd6a567c9690dc817e895dfc1360a0967cb46b7a205bcc67c2f67a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.surfcoat.2019.125286$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids></links><search><creatorcontrib>Zdorovets, M.V.</creatorcontrib><creatorcontrib>Kozlovskiy, A.L.</creatorcontrib><title>Study of the stability of the structural properties of CeO2 microparticles to helium irradiation</title><title>Surface & coatings technology</title><description>The work is devoted to the study of the radiation resistance of CeO2 microparticles to irradiation with low-energy Не2+ ions with an energy of 40 keV, the irradiation fluence was 1015–1016 ion/cm2. The study found that, in contrast to the initial spherical microparticles, irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions. According to energy dispersive analysis, an increase in the irradiation fluence leads to an increase in the oxygen content and its uneven distribution over the structure, which leads to a violation of the stoichiometry of the microparticles under study. It was found that the displacement of atoms from the lattice sites as a result of irradiation, as well as their subsequent migration, leads to a change in interplanar spacings and the appearance of distortions and deformations of the crystal lattice. According to X-ray diffraction data, changes in the crystal structure of the microparticles under study are associated with deformation and distortion of the crystal structure due to migration of defects and an increase in the vacancy density of oxygen defects, as well as partial swelling of the crystal structure.
•Study of the stability of the structural properties of CeO2•Irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions.•Data on changes in elemental composition and stoichiometric ratio•Changes in the mean square displacements of atoms and the concentration of defects in the structure</description><subject>Agglomerates</subject><subject>Cerium dioxide</subject><subject>Cerium oxides</subject><subject>Crystal defects</subject><subject>Crystal lattices</subject><subject>Crystal structure</subject><subject>Deformation</subject><subject>Displacements (lattice)</subject><subject>Fluence</subject><subject>Inclusions</subject><subject>Irradiation</subject><subject>Lattice sites</subject><subject>Lattice vacancies</subject><subject>Microparticles</subject><subject>Nuclear power</subject><subject>Oxygen content</subject><subject>Radiation tolerance</subject><subject>Sintering (powder metallurgy)</subject><subject>Stoichiometry</subject><subject>Structural stability</subject><subject>Swelling</subject><issn>0257-8972</issn><issn>1879-3347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkMtKxDAUhoMoOI6-ghRct-bSJs1OGbzBwCycfUzTUyalMx1zEebtTamCO1eH8__n-iF0S3BBMOH3feGj68yoQ0ExkQWhFa35GVqQWsicsVKcowWmlchrKegluvK-xxgTIcsF-ngPsT1lY5eFHWQ-6MYONvwRXDQhOj1kRzcewQULfjJXsKHZ3pok6iSaIclhzHYw2LjPrHO6tTrY8XCNLjo9eLj5iUu0fX7arl7z9eblbfW4zg0rccgBM9pIWsmm5briwkgucWtqIqCWVdsZwjjWWCanKXkjNMVVY0xKaceFZkt0N49NZ35G8EH1Y3SHtFFRVjGeWHCRqvhcle723kGnjs7utTspgtUEU_XqF6aaYKoZZmp8mBshvfBlwSlvLBwMtNaBCaod7X8jvgHJ9oJF</recordid><startdate>20200215</startdate><enddate>20200215</enddate><creator>Zdorovets, M.V.</creator><creator>Kozlovskiy, A.L.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20200215</creationdate><title>Study of the stability of the structural properties of CeO2 microparticles to helium irradiation</title><author>Zdorovets, M.V. ; Kozlovskiy, A.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-e032b9259bd6a567c9690dc817e895dfc1360a0967cb46b7a205bcc67c2f67a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Agglomerates</topic><topic>Cerium dioxide</topic><topic>Cerium oxides</topic><topic>Crystal defects</topic><topic>Crystal lattices</topic><topic>Crystal structure</topic><topic>Deformation</topic><topic>Displacements (lattice)</topic><topic>Fluence</topic><topic>Inclusions</topic><topic>Irradiation</topic><topic>Lattice sites</topic><topic>Lattice vacancies</topic><topic>Microparticles</topic><topic>Nuclear power</topic><topic>Oxygen content</topic><topic>Radiation tolerance</topic><topic>Sintering (powder metallurgy)</topic><topic>Stoichiometry</topic><topic>Structural stability</topic><topic>Swelling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zdorovets, M.V.</creatorcontrib><creatorcontrib>Kozlovskiy, A.L.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Surface & coatings technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zdorovets, M.V.</au><au>Kozlovskiy, A.L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of the stability of the structural properties of CeO2 microparticles to helium irradiation</atitle><jtitle>Surface & coatings technology</jtitle><date>2020-02-15</date><risdate>2020</risdate><volume>383</volume><spage>125286</spage><pages>125286-</pages><artnum>125286</artnum><issn>0257-8972</issn><eissn>1879-3347</eissn><abstract>The work is devoted to the study of the radiation resistance of CeO2 microparticles to irradiation with low-energy Не2+ ions with an energy of 40 keV, the irradiation fluence was 1015–1016 ion/cm2. The study found that, in contrast to the initial spherical microparticles, irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions. According to energy dispersive analysis, an increase in the irradiation fluence leads to an increase in the oxygen content and its uneven distribution over the structure, which leads to a violation of the stoichiometry of the microparticles under study. It was found that the displacement of atoms from the lattice sites as a result of irradiation, as well as their subsequent migration, leads to a change in interplanar spacings and the appearance of distortions and deformations of the crystal lattice. According to X-ray diffraction data, changes in the crystal structure of the microparticles under study are associated with deformation and distortion of the crystal structure due to migration of defects and an increase in the vacancy density of oxygen defects, as well as partial swelling of the crystal structure.
•Study of the stability of the structural properties of CeO2•Irradiated microparticles are a mixture of sintered sphere-like agglomerates, with porous inclusions.•Data on changes in elemental composition and stoichiometric ratio•Changes in the mean square displacements of atoms and the concentration of defects in the structure</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.surfcoat.2019.125286</doi></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Agglomerates Cerium dioxide Cerium oxides Crystal defects Crystal lattices Crystal structure Deformation Displacements (lattice) Fluence Inclusions Irradiation Lattice sites Lattice vacancies Microparticles Nuclear power Oxygen content Radiation tolerance Sintering (powder metallurgy) Stoichiometry Structural stability Swelling |
| title | Study of the stability of the structural properties of CeO2 microparticles to helium irradiation |
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