Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method
Cerium doped yttrium oxide nanoparticles with various Ce3+ concentrations between 0.001 and 0.010 at% have been synthesised by precipitation method using ammonium hydroxide as a precipitation agent. The synthesised powders are characterised by a mean particle size of ca. 55 nm. Highly dense specimen...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539522000980 |
| _version_ | 1811154302907973632 |
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| author | Nibu Putenpurayil Govindan Aliasghar Najafzadehkhoee Ali Talimian Vaclav Pouchly Monika Michálková Peter Švančárek Róbert Klement Dušan Galusek |
| author_facet | Nibu Putenpurayil Govindan Aliasghar Najafzadehkhoee Ali Talimian Vaclav Pouchly Monika Michálková Peter Švančárek Róbert Klement Dušan Galusek |
| author_sort | Nibu Putenpurayil Govindan |
| collection | DOAJ |
| description | Cerium doped yttrium oxide nanoparticles with various Ce3+ concentrations between 0.001 and 0.010 at% have been synthesised by precipitation method using ammonium hydroxide as a precipitation agent. The synthesised powders are characterised by a mean particle size of ca. 55 nm. Highly dense specimens, with a relative density> 98.8%, were obtained by sintering the green compacts shaped by pressure filtration, at 1550 °C for 3 h in air. The sintering behaviour of Ce3+ doped Y2O3 was studied by constructing Master Sintering Curves (MSC); the results showed that the apparent activation energy of sintering for Ce3+ doped Y2O3 increases with the increase of cerium concentration. The segregation of larger Ce3+ cations in the grain boundaries is likely to be responsible for the increase in the sintering activation energy. |
| first_indexed | 2024-04-10T04:14:33Z |
| format | Article |
| id | doaj.art-15ce8c65e8b94a93b69ec8323cd4fce2 |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-04-10T04:14:33Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-15ce8c65e8b94a93b69ec8323cd4fce22023-03-12T04:22:14ZengElsevierOpen Ceramics2666-53952023-03-0113100315Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation methodNibu Putenpurayil Govindan0Aliasghar Najafzadehkhoee1Ali Talimian2Vaclav Pouchly3Monika Michálková4Peter Švančárek5Róbert Klement6Dušan Galusek7FunGlass - Centre for Functional and Surface Functionalized Glass, TnUAD, Trenčín, SlovakiaJoint Glass Center of the IIC SAS, TnU AD, and FChPT STU, Trenčín, Slovakia; Corresponding author.FunGlass - Centre for Functional and Surface Functionalized Glass, TnUAD, Trenčín, SlovakiaCEITEC BUT, Brno University of Technology, Purkynova 123, Brno, Czech Republic; Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, Brno, Czech RepublicJoint Glass Center of the IIC SAS, TnU AD, and FChPT STU, Trenčín, SlovakiaJoint Glass Center of the IIC SAS, TnU AD, and FChPT STU, Trenčín, SlovakiaFunGlass - Centre for Functional and Surface Functionalized Glass, TnUAD, Trenčín, SlovakiaFunGlass - Centre for Functional and Surface Functionalized Glass, TnUAD, Trenčín, Slovakia; Joint Glass Center of the IIC SAS, TnU AD, and FChPT STU, Trenčín, SlovakiaCerium doped yttrium oxide nanoparticles with various Ce3+ concentrations between 0.001 and 0.010 at% have been synthesised by precipitation method using ammonium hydroxide as a precipitation agent. The synthesised powders are characterised by a mean particle size of ca. 55 nm. Highly dense specimens, with a relative density> 98.8%, were obtained by sintering the green compacts shaped by pressure filtration, at 1550 °C for 3 h in air. The sintering behaviour of Ce3+ doped Y2O3 was studied by constructing Master Sintering Curves (MSC); the results showed that the apparent activation energy of sintering for Ce3+ doped Y2O3 increases with the increase of cerium concentration. The segregation of larger Ce3+ cations in the grain boundaries is likely to be responsible for the increase in the sintering activation energy.http://www.sciencedirect.com/science/article/pii/S2666539522000980Y2O3SinteringMaster sintering curveEBSD |
| spellingShingle | Nibu Putenpurayil Govindan Aliasghar Najafzadehkhoee Ali Talimian Vaclav Pouchly Monika Michálková Peter Švančárek Róbert Klement Dušan Galusek Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method Open Ceramics Y2O3 Sintering Master sintering curve EBSD |
| title | Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method |
| title_full | Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method |
| title_fullStr | Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method |
| title_full_unstemmed | Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method |
| title_short | Sintering of Ce3+-doped yttria nanoparticles prepared by precipitation method |
| title_sort | sintering of ce3 doped yttria nanoparticles prepared by precipitation method |
| topic | Y2O3 Sintering Master sintering curve EBSD |
| url | http://www.sciencedirect.com/science/article/pii/S2666539522000980 |
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