Liu, Jiongjie ; Li, Wei ; Ricohermoso, Emmanuel III ; Qiao, Zhuihui ; Dai, Qingwen ; Liu, Xingmin ; Xie, Wenjie ; Ionescu, Emanuel ; Weidenkaff, Anke ; Riedel, Ralf (2023)
Temperature‐dependent mechanical and oxidation behavior of in situ formed ZrN/ZrO2‐containing Si3N4‐based composite.
In: Journal of the American Ceramic Society, 106 (8)
doi: 10.1111/jace.19146
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
In this work, Si3N4 and Zr(NO3)(4) were used as raw materials to prepare ZrN/ZrO2-containing Si3N4-based ceramic composite. The processing, phase composition, and microstructure of the composite were investigated. Hardness and fracture toughness of the ceramics were evaluated via Vickers indentation in Ar at 25 degrees C, 300 degrees C, 600 degrees C, and 900 degrees C. During spark plasma sintering, Zr(NO3)(4) was transformed into tetragonal ZrO2, which further reacted with Si3N4, resulting in the formation of ZrN. The introduction of ZrN enhanced the high-temperature mechanical properties of the composite, and its hardness and fracture toughness reached 13.4 GPa and 6.1MPa center dot m(1/2) at 900 degrees C, respectively. The oxidation experiment was carried out in air at 1000 degrees C, 1300 degrees C, and 1500 degrees C for 5 h. It was shown that high-temperature oxidation promoted the formation and growth of porous oxide layers. The microstructure and phase composition of the formed oxide layers were investigated in detail. Finally, it was identified that the obtained composite exhibited a higher thermal diffusivity than that ofmonolithic Si3N4 in the temperature range of 100 degrees C-1000 degrees C.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Liu, Jiongjie ; Li, Wei ; Ricohermoso, Emmanuel III ; Qiao, Zhuihui ; Dai, Qingwen ; Liu, Xingmin ; Xie, Wenjie ; Ionescu, Emanuel ; Weidenkaff, Anke ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Temperature‐dependent mechanical and oxidation behavior of in situ formed ZrN/ZrO2‐containing Si3N4‐based composite |
| Sprache: | Englisch |
| Publikationsjahr: | August 2023 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 106 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.1111/jace.19146 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | In this work, Si3N4 and Zr(NO3)(4) were used as raw materials to prepare ZrN/ZrO2-containing Si3N4-based ceramic composite. The processing, phase composition, and microstructure of the composite were investigated. Hardness and fracture toughness of the ceramics were evaluated via Vickers indentation in Ar at 25 degrees C, 300 degrees C, 600 degrees C, and 900 degrees C. During spark plasma sintering, Zr(NO3)(4) was transformed into tetragonal ZrO2, which further reacted with Si3N4, resulting in the formation of ZrN. The introduction of ZrN enhanced the high-temperature mechanical properties of the composite, and its hardness and fracture toughness reached 13.4 GPa and 6.1MPa center dot m(1/2) at 900 degrees C, respectively. The oxidation experiment was carried out in air at 1000 degrees C, 1300 degrees C, and 1500 degrees C for 5 h. It was shown that high-temperature oxidation promoted the formation and growth of porous oxide layers. The microstructure and phase composition of the formed oxide layers were investigated in detail. Finally, it was identified that the obtained composite exhibited a higher thermal diffusivity than that ofmonolithic Si3N4 in the temperature range of 100 degrees C-1000 degrees C. |
| Freie Schlagworte: | mechanical properties, oxidation, silicon nitride, thermal properties, zirconia, ceramic-matrix composites, high thermal-conductivity, fracture-toughness, phase-composition, silicon-carbide, Si3N4 ceramics, microstructure, beta-Si3N4, decomposition |
| 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 |
| TU-Projekte: | DFG|GRK 2561|TP_1_Riedel_GRK_2561 DFG|GRK 2561|TP_2_Riedel_GRK_2561 |
| Hinterlegungsdatum: | 07 Jun 2023 05:03 |
| Letzte Änderung: | 27 Nov 2023 07:40 |
| PPN: | 508372755 |
| Zugehörige Links: | |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Temperature‐dependent mechanical and oxidation behavior of in situ formed ZrN/ZrO₂‐containing Si₃N₄‐based composite. (deposited 24 Nov 2023 13:45)
- Temperature‐dependent mechanical and oxidation behavior of in situ formed ZrN/ZrO2‐containing Si3N4‐based composite. (deposited 07 Jun 2023 05:03) [Gegenwärtig angezeigt]
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