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Structural parameters and oxygen ion conductivity of Y2O3–ZrO2 and MgO–ZrO2 at high temperature
The oxygen ion conductivity of zirconia-based solid electrolytes doped with 8mol% Y2O3–ZrO2 (YSZ) and 9mol% MgO–ZrO2 (Mg-PSZ) at high temperature was investigated in terms of their thermal behavior and structural changes. At room temperature, YSZ showed a single phase with a fluorite cubic structure...
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Published in: | Ceramics international 2013-12, Vol.39 (8), p.9247-9251 |
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container_title | Ceramics international |
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creator | Yoon, Sanghyeon Noh, Taimin Kim, Wook Choi, Joo Lee, Heesoo |
description | The oxygen ion conductivity of zirconia-based solid electrolytes doped with 8mol% Y2O3–ZrO2 (YSZ) and 9mol% MgO–ZrO2 (Mg-PSZ) at high temperature was investigated in terms of their thermal behavior and structural changes. At room temperature, YSZ showed a single phase with a fluorite cubic structure, whereas Mg-PSZ had a mixture of cubic, tetragonal and some monoclinic phases. YSZ exhibited higher ionic conductivity than Mg-PSZ at temperatures from 600°C to 1250°C because of the existence of the single cubic structure and low activation energy. A considerable increase in the conductivity with increasing temperature was observed in Mg-PSZ, which showed higher ionic conductivity than YSZ within the higher temperature range of 1300–1500°C. A monoclinic-to-tetragonal phase transformation was found in Mg-PSZ and the lattice parameter of the cubic phase increased at 1200°C. The phase transformation and the large lattice free volume contributed to the significant enhancement of the ionic conductivity of Mg-PSZ at high temperatures. |
doi_str_mv | 10.1016/j.ceramint.2013.05.032 |
format | article |
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At room temperature, YSZ showed a single phase with a fluorite cubic structure, whereas Mg-PSZ had a mixture of cubic, tetragonal and some monoclinic phases. YSZ exhibited higher ionic conductivity than Mg-PSZ at temperatures from 600°C to 1250°C because of the existence of the single cubic structure and low activation energy. A considerable increase in the conductivity with increasing temperature was observed in Mg-PSZ, which showed higher ionic conductivity than YSZ within the higher temperature range of 1300–1500°C. A monoclinic-to-tetragonal phase transformation was found in Mg-PSZ and the lattice parameter of the cubic phase increased at 1200°C. 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At room temperature, YSZ showed a single phase with a fluorite cubic structure, whereas Mg-PSZ had a mixture of cubic, tetragonal and some monoclinic phases. YSZ exhibited higher ionic conductivity than Mg-PSZ at temperatures from 600°C to 1250°C because of the existence of the single cubic structure and low activation energy. A considerable increase in the conductivity with increasing temperature was observed in Mg-PSZ, which showed higher ionic conductivity than YSZ within the higher temperature range of 1300–1500°C. A monoclinic-to-tetragonal phase transformation was found in Mg-PSZ and the lattice parameter of the cubic phase increased at 1200°C. The phase transformation and the large lattice free volume contributed to the significant enhancement of the ionic conductivity of Mg-PSZ at high temperatures.</description><subject>B. X-ray methods</subject><subject>C. Ionic conductivity</subject><subject>Ceramics</subject><subject>D. ZrO2</subject><subject>Ionic conductivity</subject><subject>Lattice parameters</subject><subject>Lattices</subject><subject>Magnesium</subject><subject>Phase transformations</subject><subject>Solid electrolytes</subject><subject>Structural change</subject><subject>Yttria stabilized zirconia</subject><issn>0272-8842</issn><issn>1873-3956</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkbtOAzEQRS0EEuHxC8glzS5je72PDoR4SaAUQAGNZdnj4CjZDbaDSMc_8Id8CYYALdVopHOPZnQJOWBQMmD10bQ0GPTc96nkwEQJsgTBN8iItY0oRCfrTTIC3vCibSu-TXZinEIOdhWMiLlNYWnSMugZXeiswYQhUt1bOryuJthTP_TUDL3NlH_xaUUHRx_4WHy8vT-GMf9GbybjvzXRJz95ognni3xWNuMe2XJ6FnH_Z-6S-_Ozu9PL4np8cXV6cl0YAW0qWokOhXCWg5PgWNNKWTd155wGy1suurrmndGdBOYEQwu2dUYK7jSzoJnYJYdr7yIMz0uMSc19NDib6R6HZVT5ZV4Bhwb-R6uuEpJVsslovUZNGGIM6NQi-LkOK8VAfRWgpuq3APVVgAKpcgE5eLwOYv75xWNQ0XjsDVof0CRlB_-f4hPmepO0</recordid><startdate>20131201</startdate><enddate>20131201</enddate><creator>Yoon, Sanghyeon</creator><creator>Noh, Taimin</creator><creator>Kim, Wook</creator><creator>Choi, Joo</creator><creator>Lee, Heesoo</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20131201</creationdate><title>Structural parameters and oxygen ion conductivity of Y2O3–ZrO2 and MgO–ZrO2 at high temperature</title><author>Yoon, Sanghyeon ; Noh, Taimin ; Kim, Wook ; Choi, Joo ; Lee, Heesoo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c308t-85efe33fd20f50f178556769ffa0d282396629ca9501f31ed0d8fc532fa1d0a13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>B. 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ZrO2</topic><topic>Ionic conductivity</topic><topic>Lattice parameters</topic><topic>Lattices</topic><topic>Magnesium</topic><topic>Phase transformations</topic><topic>Solid electrolytes</topic><topic>Structural change</topic><topic>Yttria stabilized zirconia</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoon, Sanghyeon</creatorcontrib><creatorcontrib>Noh, Taimin</creatorcontrib><creatorcontrib>Kim, Wook</creatorcontrib><creatorcontrib>Choi, Joo</creatorcontrib><creatorcontrib>Lee, Heesoo</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Ceramics international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoon, Sanghyeon</au><au>Noh, Taimin</au><au>Kim, Wook</au><au>Choi, Joo</au><au>Lee, Heesoo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural parameters and oxygen ion conductivity of Y2O3–ZrO2 and MgO–ZrO2 at high temperature</atitle><jtitle>Ceramics international</jtitle><date>2013-12-01</date><risdate>2013</risdate><volume>39</volume><issue>8</issue><spage>9247</spage><epage>9251</epage><pages>9247-9251</pages><issn>0272-8842</issn><eissn>1873-3956</eissn><abstract>The oxygen ion conductivity of zirconia-based solid electrolytes doped with 8mol% Y2O3–ZrO2 (YSZ) and 9mol% MgO–ZrO2 (Mg-PSZ) at high temperature was investigated in terms of their thermal behavior and structural changes. At room temperature, YSZ showed a single phase with a fluorite cubic structure, whereas Mg-PSZ had a mixture of cubic, tetragonal and some monoclinic phases. YSZ exhibited higher ionic conductivity than Mg-PSZ at temperatures from 600°C to 1250°C because of the existence of the single cubic structure and low activation energy. A considerable increase in the conductivity with increasing temperature was observed in Mg-PSZ, which showed higher ionic conductivity than YSZ within the higher temperature range of 1300–1500°C. A monoclinic-to-tetragonal phase transformation was found in Mg-PSZ and the lattice parameter of the cubic phase increased at 1200°C. The phase transformation and the large lattice free volume contributed to the significant enhancement of the ionic conductivity of Mg-PSZ at high temperatures.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.ceramint.2013.05.032</doi><tpages>5</tpages></addata></record> |
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subjects | B. X-ray methods C. Ionic conductivity Ceramics D. ZrO2 Ionic conductivity Lattice parameters Lattices Magnesium Phase transformations Solid electrolytes Structural change Yttria stabilized zirconia |
title | Structural parameters and oxygen ion conductivity of Y2O3–ZrO2 and MgO–ZrO2 at high temperature |
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