Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation
Alumina toughened zirconia (ATZ) nanoceramics accompanied with high-strength, high-toughness and high-hardness were prepared by in-situ nanoprecipitation from using solid solution micro-powders. The submicron-sized Al2O3 (∼445 nm) and ZrO2 (∼361 nm) grains contained low-density precipitated nano-ZrO...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785421015003 |
| _version_ | 1818975833043238912 |
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| author | Yongdong Yu Xudong Liu Yuchen Yuan Wanjun Yu Hang Yin Zhao Yin Yongting Zheng Xiaodong He |
| author_facet | Yongdong Yu Xudong Liu Yuchen Yuan Wanjun Yu Hang Yin Zhao Yin Yongting Zheng Xiaodong He |
| author_sort | Yongdong Yu |
| collection | DOAJ |
| description | Alumina toughened zirconia (ATZ) nanoceramics accompanied with high-strength, high-toughness and high-hardness were prepared by in-situ nanoprecipitation from using solid solution micro-powders. The submicron-sized Al2O3 (∼445 nm) and ZrO2 (∼361 nm) grains contained low-density precipitated nano-ZrO2 (∼35 nm) and nano-Y4Al2O9 (YAM, ∼87 nm) particles, respectively, making high-performance nano-ATZ ceramics with ultrafine intracrystalline nanostructure yet achieved. There was a parallel or eutectic lattice orientation relationship between the submicrocrystals and its internal nanoparticles of their crystal planes, which is very conducive to the improvement of the mechanical properties of nano-ATZ ceramics. The fracture toughness and hardness of 30wt%Al2O3/70wt%ZrO2(3 mol%Y2O3) can reach up to 5.68 ± 0.17 MPa m1/2 (single-edge V-notched beam method, SEVNB) and 16.32 ± 0.45 GPa, respectively, which are improved by ∼25% and ∼20% compared with those of 3Y-TZP ceramics. Therefore, this method can be used to prepare nano-ATZ ceramics contained ultrafine nanoparticles and uniform distribution of Al2O3 phases. |
| first_indexed | 2024-12-20T16:02:14Z |
| format | Article |
| id | doaj.art-a94b7f13a3484e4f9677515891d05815 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-20T16:02:14Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a94b7f13a3484e4f9677515891d058152022-12-21T19:34:14ZengElsevierJournal of Materials Research and Technology2238-78542022-01-011612931304Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitationYongdong Yu0Xudong Liu1Yuchen Yuan2Wanjun Yu3Hang Yin4Zhao Yin5Yongting Zheng6Xiaodong He7National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaSchool of Environment and Materials Engineering, Yantai University, Yantai, 264003, PR ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR China; Corresponding author.National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150080, PR ChinaAlumina toughened zirconia (ATZ) nanoceramics accompanied with high-strength, high-toughness and high-hardness were prepared by in-situ nanoprecipitation from using solid solution micro-powders. The submicron-sized Al2O3 (∼445 nm) and ZrO2 (∼361 nm) grains contained low-density precipitated nano-ZrO2 (∼35 nm) and nano-Y4Al2O9 (YAM, ∼87 nm) particles, respectively, making high-performance nano-ATZ ceramics with ultrafine intracrystalline nanostructure yet achieved. There was a parallel or eutectic lattice orientation relationship between the submicrocrystals and its internal nanoparticles of their crystal planes, which is very conducive to the improvement of the mechanical properties of nano-ATZ ceramics. The fracture toughness and hardness of 30wt%Al2O3/70wt%ZrO2(3 mol%Y2O3) can reach up to 5.68 ± 0.17 MPa m1/2 (single-edge V-notched beam method, SEVNB) and 16.32 ± 0.45 GPa, respectively, which are improved by ∼25% and ∼20% compared with those of 3Y-TZP ceramics. Therefore, this method can be used to prepare nano-ATZ ceramics contained ultrafine nanoparticles and uniform distribution of Al2O3 phases.http://www.sciencedirect.com/science/article/pii/S2238785421015003Combustion synthesisRapid solidificationMicrostructural evolutionNano-ATZSolid solutionsNanoprecipitation |
| spellingShingle | Yongdong Yu Xudong Liu Yuchen Yuan Wanjun Yu Hang Yin Zhao Yin Yongting Zheng Xiaodong He Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation Journal of Materials Research and Technology Combustion synthesis Rapid solidification Microstructural evolution Nano-ATZ Solid solutions Nanoprecipitation |
| title | Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation |
| title_full | Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation |
| title_fullStr | Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation |
| title_full_unstemmed | Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation |
| title_short | Microstructural evolution and mechanical properties of nano-ATZ ceramics by solid solution precipitation |
| title_sort | microstructural evolution and mechanical properties of nano atz ceramics by solid solution precipitation |
| topic | Combustion synthesis Rapid solidification Microstructural evolution Nano-ATZ Solid solutions Nanoprecipitation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785421015003 |
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