Li, Wei ; Ma, Shuailing ; Cui, Siwen ; Ding, Jingxue ; Widenmeyer, Marc ; Zhang, Xiaoqing ; Zhan, Ying ; Yu, Zhaoju ; Cheng, Jiarong ; Zhu, Pinwen ; Cui, Tian ; Weidenkaff, Anke ; Riedel, Ralf (2024)
High‐pressure synthesis of amorphous Si₃N₄ and SiBN‐based monoliths without sintering additives.
In: Advanced Engineering Materials, 26 (16)
doi: 10.1002/adem.202400677
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Amorphous Si₃N₄ and SiBN monoliths without sintering additives are successfully prepared by high‐pressure–low‐temperature (HPLT) sintering using the single‐source‐precursor‐derived amorphous Si3N4 and SiBN powders as raw materials. The microstructural evolution and crystallization behavior of the as‐prepared samples are investigated using scanning electron and transmission electron microscopy and X‐ray powder diffraction, respectively. The results show that the incorporation of boron in the Si–N network enhances the crystallization temperature up to 1200 °C. The Vickers’ hardness of the HPLT‐sintered Si₃N₄ sample amounts ≈11.6 GPa whether prepared at 1000 or 1200 °C, while the maximum hardness of the SiBN sample is up to 16.3 GPa. The fracture toughness of amorphous Si3N4 and SiBN5 samples is almost identical (around 2.5 MPa m¹/²) whether prepared at 1000 or 1200 °C, and SiBN₂ and SiBN₅ samples show an improved fracture toughness. In addition, the oxidation resistance of the as‐prepared samples is investigated at temperatures up to 1000 °C. A comparison between amorphous Si₃N₄ and SiBN monoliths demonstrates a positive effect of the presence of boron on their oxidation resistance.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Li, Wei ; Ma, Shuailing ; Cui, Siwen ; Ding, Jingxue ; Widenmeyer, Marc ; Zhang, Xiaoqing ; Zhan, Ying ; Yu, Zhaoju ; Cheng, Jiarong ; Zhu, Pinwen ; Cui, Tian ; Weidenkaff, Anke ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | High‐pressure synthesis of amorphous Si₃N₄ and SiBN‐based monoliths without sintering additives |
| Sprache: | Englisch |
| Publikationsjahr: | August 2024 |
| Ort: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Engineering Materials |
| Jahrgang/Volume einer Zeitschrift: | 26 |
| (Heft-)Nummer: | 16 |
| Kollation: | 9 Seiten |
| DOI: | 10.1002/adem.202400677 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Amorphous Si₃N₄ and SiBN monoliths without sintering additives are successfully prepared by high‐pressure–low‐temperature (HPLT) sintering using the single‐source‐precursor‐derived amorphous Si3N4 and SiBN powders as raw materials. The microstructural evolution and crystallization behavior of the as‐prepared samples are investigated using scanning electron and transmission electron microscopy and X‐ray powder diffraction, respectively. The results show that the incorporation of boron in the Si–N network enhances the crystallization temperature up to 1200 °C. The Vickers’ hardness of the HPLT‐sintered Si₃N₄ sample amounts ≈11.6 GPa whether prepared at 1000 or 1200 °C, while the maximum hardness of the SiBN sample is up to 16.3 GPa. The fracture toughness of amorphous Si3N4 and SiBN5 samples is almost identical (around 2.5 MPa m¹/²) whether prepared at 1000 or 1200 °C, and SiBN₂ and SiBN₅ samples show an improved fracture toughness. In addition, the oxidation resistance of the as‐prepared samples is investigated at temperatures up to 1000 °C. A comparison between amorphous Si₃N₄ and SiBN monoliths demonstrates a positive effect of the presence of boron on their oxidation resistance. |
| Freie Schlagworte: | amorphous monoliths, hardness, high‐pressure synthesis, oxidation resistance |
| ID-Nummer: | Artikel-ID: 2400677 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 19 Nov 2024 06:49 |
| Letzte Änderung: | 19 Nov 2024 10:38 |
| PPN: | 523640501 |
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| Suche nach Titel in: | TUfind oder in Google |
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High‐Pressure Synthesis of Amorphous Si₃N₄ and SiBN‐Based Monoliths without Sintering Additives. (deposited 18 Nov 2024 12:09)
- High‐pressure synthesis of amorphous Si₃N₄ and SiBN‐based monoliths without sintering additives. (deposited 19 Nov 2024 06:49) [Gegenwärtig angezeigt]
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