Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods
In this study, the combination of hydrothermal technique and seed-doping method was conducted to coordinately control the formation of fine MgO-Y<sub>2</sub>O<sub>3</sub> powders, which are promising mid-infrared materials applied to hypersonic aircraft windows due to their e...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/1/126 |
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| author | Shangyu Yang Hao Lan Xiaoming Sun Shaowei Feng Weigang Zhang |
| author_facet | Shangyu Yang Hao Lan Xiaoming Sun Shaowei Feng Weigang Zhang |
| author_sort | Shangyu Yang |
| collection | DOAJ |
| description | In this study, the combination of hydrothermal technique and seed-doping method was conducted to coordinately control the formation of fine MgO-Y<sub>2</sub>O<sub>3</sub> powders, which are promising mid-infrared materials applied to hypersonic aircraft windows due to their excellent infrared transmissions over wide regions. Y(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, Mg(NO<sub>3</sub>)<sub>2</sub>·6H<sub>2</sub>O, Y<sub>2</sub>O<sub>3</sub> seeds and MgO seeds were used as raw materials to prepare the MgO-Y<sub>2</sub>O<sub>3</sub> composite powders (50:50 vol.%), and the influences of the seed contents and hydrothermal treatment temperatures on the final powders and hot-pressed ceramics were investigated by XRD, SEM and TEM techniques. The results show that powders with a seed content of 5% that are hydrothermally synthesized at 190 °C can present a better uniformity and dispersion with a particle size of ~125 nm. Furthermore, the ceramics prepared with the above powders displayed a homogenous two-phase microstructure, fewer pores and a fine grain size with Y<sub>2</sub>O<sub>3</sub> of ~1 µm and MgO of ~620 nm. The present study may open an avenue for developing transparent ceramics based on MgO-Y<sub>2</sub>O<sub>3</sub> nanopowders prepared by hydrothermal technique. |
| first_indexed | 2024-03-11T09:55:51Z |
| format | Article |
| id | doaj.art-44aff5df10014bb7af6f1e522af8053e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:51Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-44aff5df10014bb7af6f1e522af8053e2023-11-16T15:47:23ZengMDPI AGMaterials1996-19442022-12-0116112610.3390/ma16010126Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding MethodsShangyu Yang0Hao Lan1Xiaoming Sun2Shaowei Feng3Weigang Zhang4School of Rare Earths, University of Science and Technology of China, Hefei 230026, ChinaSchool of Rare Earths, University of Science and Technology of China, Hefei 230026, ChinaInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Rare Earths, University of Science and Technology of China, Hefei 230026, ChinaIn this study, the combination of hydrothermal technique and seed-doping method was conducted to coordinately control the formation of fine MgO-Y<sub>2</sub>O<sub>3</sub> powders, which are promising mid-infrared materials applied to hypersonic aircraft windows due to their excellent infrared transmissions over wide regions. Y(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, Mg(NO<sub>3</sub>)<sub>2</sub>·6H<sub>2</sub>O, Y<sub>2</sub>O<sub>3</sub> seeds and MgO seeds were used as raw materials to prepare the MgO-Y<sub>2</sub>O<sub>3</sub> composite powders (50:50 vol.%), and the influences of the seed contents and hydrothermal treatment temperatures on the final powders and hot-pressed ceramics were investigated by XRD, SEM and TEM techniques. The results show that powders with a seed content of 5% that are hydrothermally synthesized at 190 °C can present a better uniformity and dispersion with a particle size of ~125 nm. Furthermore, the ceramics prepared with the above powders displayed a homogenous two-phase microstructure, fewer pores and a fine grain size with Y<sub>2</sub>O<sub>3</sub> of ~1 µm and MgO of ~620 nm. The present study may open an avenue for developing transparent ceramics based on MgO-Y<sub>2</sub>O<sub>3</sub> nanopowders prepared by hydrothermal technique.https://www.mdpi.com/1996-1944/16/1/126MgO-Y<sub>2</sub>O<sub>3</sub> nanopowdershydrothermalseedinghot-pressingtransparent ceramic |
| spellingShingle | Shangyu Yang Hao Lan Xiaoming Sun Shaowei Feng Weigang Zhang Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods Materials MgO-Y<sub>2</sub>O<sub>3</sub> nanopowders hydrothermal seeding hot-pressing transparent ceramic |
| title | Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods |
| title_full | Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods |
| title_fullStr | Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods |
| title_full_unstemmed | Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods |
| title_short | Fabrication of MgO-Y<sub>2</sub>O<sub>3</sub> Composite Nanopowders by Combining Hydrothermal and Seeding Methods |
| title_sort | fabrication of mgo y sub 2 sub o sub 3 sub composite nanopowders by combining hydrothermal and seeding methods |
| topic | MgO-Y<sub>2</sub>O<sub>3</sub> nanopowders hydrothermal seeding hot-pressing transparent ceramic |
| url | https://www.mdpi.com/1996-1944/16/1/126 |
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