An effective strategy for preparing transparent ceramics using nanorod powders based on pressure-assisted particle fracture and rearrangement
Abstract Achieving full densification of some ceramic materials, such as $ Y_{2} $$ O_{3} $, without sintering aids by spark plasma sintering (SPS) is a great challenge when plastic deformation contributes limitedly to the densification as the yield stress of the material at an elevated temperature is higher than the applied sintering pressure. Herein, we demonstrate that particle fracture and rearrangement is an effective strategy to promote the densification during the pressure-assisted sintering process. Specifically, $ Y_{2} $$ O_{3} $ nanocrystalline powders composed of nanorod and near-spherical particles were synthesized and sintered at various temperatures by the SPS. The results show that the relative density of the ceramics prepared by the nanorod powders is higher than the density of the ceramics from the near-spherical powders after 600 °C due to the fracture and rearrangement of the nanorods at low temperatures, which leads to the decrease of particle size and the increase of density and homogeneity. Based on this novel densification mechanism, ultrafine-grained $ Y_{2} $$ O_{3} $ transparent ceramics with good optical and mechanical properties were fabricated successfully from the nanorod powders..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:11 |
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| Enthalten in: |
Journal of advanced ceramics - 11(2022), 12 vom: 12. Nov., Seite 1976-1987 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Huang, Zhangyi [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Fracture and rearrangement |
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| Anmerkungen: |
© The Author(s) 2022 |
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| doi: |
10.1007/s40145-022-0661-8 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2132896585 |
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| 100 | 1 | |a Huang, Zhangyi |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a An effective strategy for preparing transparent ceramics using nanorod powders based on pressure-assisted particle fracture and rearrangement |
| 264 | 1 | |c 2022 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
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| 500 | |a © The Author(s) 2022 | ||
| 520 | |a Abstract Achieving full densification of some ceramic materials, such as $ Y_{2} $$ O_{3} $, without sintering aids by spark plasma sintering (SPS) is a great challenge when plastic deformation contributes limitedly to the densification as the yield stress of the material at an elevated temperature is higher than the applied sintering pressure. Herein, we demonstrate that particle fracture and rearrangement is an effective strategy to promote the densification during the pressure-assisted sintering process. Specifically, $ Y_{2} $$ O_{3} $ nanocrystalline powders composed of nanorod and near-spherical particles were synthesized and sintered at various temperatures by the SPS. The results show that the relative density of the ceramics prepared by the nanorod powders is higher than the density of the ceramics from the near-spherical powders after 600 °C due to the fracture and rearrangement of the nanorods at low temperatures, which leads to the decrease of particle size and the increase of density and homogeneity. Based on this novel densification mechanism, ultrafine-grained $ Y_{2} $$ O_{3} $ transparent ceramics with good optical and mechanical properties were fabricated successfully from the nanorod powders. | ||
| 650 | 4 | |a transparent ceramics | |
| 650 | 4 | |a nanorods | |
| 650 | 4 | |a fracture and rearrangement | |
| 650 | 4 | |a Y | |
| 650 | 4 | |a O | |
| 650 | 4 | |a spark plasma sintering (SPS) | |
| 700 | 1 | |a Shi, Yang |4 aut | |
| 700 | 1 | |a Zhang, Yutong |4 aut | |
| 700 | 1 | |a Deng, Mao |4 aut | |
| 700 | 1 | |a Guo, Yi |4 aut | |
| 700 | 1 | |a Kong, Qingquan |4 aut | |
| 700 | 1 | |a Qi, Jianqi |4 aut | |
| 700 | 1 | |a Ma, Benyuan |4 aut | |
| 700 | 1 | |a Wang, Qingyuan |4 aut | |
| 700 | 1 | |a Wang, Haomin |4 aut | |
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| 856 | 4 | 1 | |u https://doi.org/10.1007/s40145-022-0661-8 |z lizenzpflichtig |3 Volltext |
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