Raman study of the oxidation in (U, Pu)O2 as a function of Pu content
This work presents a systematic Raman study of the matrix oxidation in a variety of (U1-y, Puy)O2 compositions (0 ≤ y ≤ 0.46) at different temperatures, between 250 °C and 400 °C. Our results indicate that the increase in Pu content hinders the oxidation process of the dioxide matrix. Further oxidat...
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| Veröffentlicht in: | Journal of nuclear materials 2017-11, Vol.495, p.484-491 |
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| creator | Elorrieta, J.M. Manara, D. Bonales, L.J. Vigier, J.F. Dieste, O. Naji, M. Belin, R.C. Baonza, V.G. Konings, R.J.M. Cobos, J. |
| description | This work presents a systematic Raman study of the matrix oxidation in a variety of (U1-y, Puy)O2 compositions (0 ≤ y ≤ 0.46) at different temperatures, between 250 °C and 400 °C. Our results indicate that the increase in Pu content hinders the oxidation process of the dioxide matrix. Further oxidation of the uranium-plutonium mixed dioxides in air starts between 250 °C and 310 °C, on a time scale of several hours. M4O9 seems to be the most stable intermediate phase formed upon oxidation of all the investigated mixed oxides, before final oxidation to M3O8. In addition, X-ray diffraction measurements and SEM images confirm the trend observed by Raman spectroscopy, i.e. Pu stabilises the fcc structure of the dioxide.
•Raman spectroscopy is highly reliable for evaluating the (U, Pu)O2 fuel oxidation.•The higher the Pu content, the more the oxidation of the dioxide matrix is hindered.•M4O9 is the intermediate stable phase found before oxidising to M3O8 (M = U, Pu). |
| doi_str_mv | 10.1016/j.jnucmat.2017.08.043 |
| format | Article |
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•Raman spectroscopy is highly reliable for evaluating the (U, Pu)O2 fuel oxidation.•The higher the Pu content, the more the oxidation of the dioxide matrix is hindered.•M4O9 is the intermediate stable phase found before oxidising to M3O8 (M = U, Pu).</description><identifier>ISSN: 0022-3115</identifier><identifier>EISSN: 1873-4820</identifier><identifier>DOI: 10.1016/j.jnucmat.2017.08.043</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Diffraction ; Interim storage ; Mixed oxides ; Nuclear waste ; Oxidation ; Oxidation process ; Oxides ; Plutonium ; Plutonium dioxide ; Raman spectroscopy ; Spectroscopy ; Studies ; Uranium ; Uranium dioxide ; Uranium-plutonium mixed oxides ; X-ray diffraction</subject><ispartof>Journal of nuclear materials, 2017-11, Vol.495, p.484-491</ispartof><rights>2017 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jnucmat.2017.08.043$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3541,27915,27916,45986</link.rule.ids></links><search><creatorcontrib>Elorrieta, J.M.</creatorcontrib><creatorcontrib>Manara, D.</creatorcontrib><creatorcontrib>Bonales, L.J.</creatorcontrib><creatorcontrib>Vigier, J.F.</creatorcontrib><creatorcontrib>Dieste, O.</creatorcontrib><creatorcontrib>Naji, M.</creatorcontrib><creatorcontrib>Belin, R.C.</creatorcontrib><creatorcontrib>Baonza, V.G.</creatorcontrib><creatorcontrib>Konings, R.J.M.</creatorcontrib><creatorcontrib>Cobos, J.</creatorcontrib><title>Raman study of the oxidation in (U, Pu)O2 as a function of Pu content</title><title>Journal of nuclear materials</title><description>This work presents a systematic Raman study of the matrix oxidation in a variety of (U1-y, Puy)O2 compositions (0 ≤ y ≤ 0.46) at different temperatures, between 250 °C and 400 °C. Our results indicate that the increase in Pu content hinders the oxidation process of the dioxide matrix. Further oxidation of the uranium-plutonium mixed dioxides in air starts between 250 °C and 310 °C, on a time scale of several hours. M4O9 seems to be the most stable intermediate phase formed upon oxidation of all the investigated mixed oxides, before final oxidation to M3O8. In addition, X-ray diffraction measurements and SEM images confirm the trend observed by Raman spectroscopy, i.e. Pu stabilises the fcc structure of the dioxide.
•Raman spectroscopy is highly reliable for evaluating the (U, Pu)O2 fuel oxidation.•The higher the Pu content, the more the oxidation of the dioxide matrix is hindered.•M4O9 is the intermediate stable phase found before oxidising to M3O8 (M = U, Pu).</description><subject>Diffraction</subject><subject>Interim storage</subject><subject>Mixed oxides</subject><subject>Nuclear waste</subject><subject>Oxidation</subject><subject>Oxidation process</subject><subject>Oxides</subject><subject>Plutonium</subject><subject>Plutonium dioxide</subject><subject>Raman spectroscopy</subject><subject>Spectroscopy</subject><subject>Studies</subject><subject>Uranium</subject><subject>Uranium dioxide</subject><subject>Uranium-plutonium mixed oxides</subject><subject>X-ray diffraction</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNotkEtLAzEUhYMoWKs_QQi4UXDGm8d0kpVIqQ8otIhdh0weOINNdCYR_fdObVd3cT7OuXwIXRIoCZDZXVd2IZutTiUFUpcgSuDsCE2IqFnBBYVjNAGgtGCEVKfobBg6AKgkVBO0eNVbHfCQsv3F0eP07nD8aa1ObQy4Dfh6c4vX-WZFsR6wxj4H8x-N7DpjE0NyIZ2jE68_BndxuFO0eVy8zZ-L5erpZf6wLByRJBU1pY4KKwjUrKlYo-uKW8kb4IJ5J21tPOeNpc5LJjW34G1jjW-I49YaBmyKrva9n338ym5Iqou5D-OkInI2Y7IWjI3U_Z5y4yvfrevVYFoXjLNt70xSNraKgNq5U506uFM7dwqEGt2xPyAuZAg</recordid><startdate>20171101</startdate><enddate>20171101</enddate><creator>Elorrieta, J.M.</creator><creator>Manara, D.</creator><creator>Bonales, L.J.</creator><creator>Vigier, J.F.</creator><creator>Dieste, O.</creator><creator>Naji, M.</creator><creator>Belin, R.C.</creator><creator>Baonza, V.G.</creator><creator>Konings, R.J.M.</creator><creator>Cobos, J.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>7QQ</scope><scope>7SR</scope><scope>7ST</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20171101</creationdate><title>Raman study of the oxidation in (U, Pu)O2 as a function of Pu content</title><author>Elorrieta, J.M. ; Manara, D. ; Bonales, L.J. ; Vigier, J.F. ; Dieste, O. ; Naji, M. ; Belin, R.C. ; Baonza, V.G. ; Konings, R.J.M. ; Cobos, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-e191t-722e28d81073b53ba754d94b0483fe9d7cf44bd2ef939a4d0fdbdcfb1e4ddc303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Diffraction</topic><topic>Interim storage</topic><topic>Mixed oxides</topic><topic>Nuclear waste</topic><topic>Oxidation</topic><topic>Oxidation process</topic><topic>Oxides</topic><topic>Plutonium</topic><topic>Plutonium dioxide</topic><topic>Raman spectroscopy</topic><topic>Spectroscopy</topic><topic>Studies</topic><topic>Uranium</topic><topic>Uranium dioxide</topic><topic>Uranium-plutonium mixed oxides</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Elorrieta, J.M.</creatorcontrib><creatorcontrib>Manara, D.</creatorcontrib><creatorcontrib>Bonales, L.J.</creatorcontrib><creatorcontrib>Vigier, J.F.</creatorcontrib><creatorcontrib>Dieste, O.</creatorcontrib><creatorcontrib>Naji, M.</creatorcontrib><creatorcontrib>Belin, R.C.</creatorcontrib><creatorcontrib>Baonza, V.G.</creatorcontrib><creatorcontrib>Konings, R.J.M.</creatorcontrib><creatorcontrib>Cobos, J.</creatorcontrib><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Journal of nuclear materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Elorrieta, J.M.</au><au>Manara, D.</au><au>Bonales, L.J.</au><au>Vigier, J.F.</au><au>Dieste, O.</au><au>Naji, M.</au><au>Belin, R.C.</au><au>Baonza, V.G.</au><au>Konings, R.J.M.</au><au>Cobos, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Raman study of the oxidation in (U, Pu)O2 as a function of Pu content</atitle><jtitle>Journal of nuclear materials</jtitle><date>2017-11-01</date><risdate>2017</risdate><volume>495</volume><spage>484</spage><epage>491</epage><pages>484-491</pages><issn>0022-3115</issn><eissn>1873-4820</eissn><abstract>This work presents a systematic Raman study of the matrix oxidation in a variety of (U1-y, Puy)O2 compositions (0 ≤ y ≤ 0.46) at different temperatures, between 250 °C and 400 °C. Our results indicate that the increase in Pu content hinders the oxidation process of the dioxide matrix. Further oxidation of the uranium-plutonium mixed dioxides in air starts between 250 °C and 310 °C, on a time scale of several hours. M4O9 seems to be the most stable intermediate phase formed upon oxidation of all the investigated mixed oxides, before final oxidation to M3O8. In addition, X-ray diffraction measurements and SEM images confirm the trend observed by Raman spectroscopy, i.e. Pu stabilises the fcc structure of the dioxide.
•Raman spectroscopy is highly reliable for evaluating the (U, Pu)O2 fuel oxidation.•The higher the Pu content, the more the oxidation of the dioxide matrix is hindered.•M4O9 is the intermediate stable phase found before oxidising to M3O8 (M = U, Pu).</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jnucmat.2017.08.043</doi><tpages>8</tpages></addata></record> |
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| subjects | Diffraction Interim storage Mixed oxides Nuclear waste Oxidation Oxidation process Oxides Plutonium Plutonium dioxide Raman spectroscopy Spectroscopy Studies Uranium Uranium dioxide Uranium-plutonium mixed oxides X-ray diffraction |
| title | Raman study of the oxidation in (U, Pu)O2 as a function of Pu content |
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