Niu, Zi-bo ; Li, Daxin ; Jia, Dechang ; Yang, Zhihua ; Lin, Kunpeng ; Wang, Dong ; He, YunPeng ; Zhou, Guoxiang ; Colombo, Paolo ; Riedel, Ralf ; Zhou, Yu (2024)
Comparative study on the microstructure evolution and crystallization behavior of precursor-derived and mechanical alloying derived SiBCN.
In: Journal of the European Ceramic Society, 44 (2)
doi: 10.1016/j.jeurceramsoc.2023.09.046
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this study, the chemical reactions and structural change during the transformation of the precursor into PDCs-SiBCN ceramic were investigated. Besides, the crystallization behaviors of precursor-derived (PDCs-SiBCN) and mechanical alloying derived (MA-SiBCN) SiBCN ceramics at different temperatures (1200-1700 degree celsius) were compared. Due to different amorphous structures derived from pyrolysis and amorphization processes, the silicon atoms units bonded by sp(3) hybridization in PDCs-SiBCN and MA-SiBCN ceramics are SiC4 and SiC(4-x)Nx tetrahedral structure, respectively. Due to the phase separation of SiC(4-x)Nx tetrahedral structure at higher temperatures (>1400 degree celsius), PDCs-SiBCN ceramic has a higher resistance to crystallization but will suffer obvious carbothermal reduction process of Si3N4 during crystallization. Finally, the crystallization kinetics of SiC in MA-SiBCN ceramic were investigated. The temperature dependence of SiC crystallization in MA-SiBCN ceramic obeys the Arrhenius-type law with different activation energies in the low and high temperature ranges respectively due to the transition of the rate-controlling mechanisms.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Niu, Zi-bo ; Li, Daxin ; Jia, Dechang ; Yang, Zhihua ; Lin, Kunpeng ; Wang, Dong ; He, YunPeng ; Zhou, Guoxiang ; Colombo, Paolo ; Riedel, Ralf ; Zhou, Yu |
| Art des Eintrags: | Bibliographie |
| Titel: | Comparative study on the microstructure evolution and crystallization behavior of precursor-derived and mechanical alloying derived SiBCN |
| Sprache: | Englisch |
| Publikationsjahr: | Februar 2024 |
| Ort: | Amsterdam |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 44 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1016/j.jeurceramsoc.2023.09.046 |
| Kurzbeschreibung (Abstract): | In this study, the chemical reactions and structural change during the transformation of the precursor into PDCs-SiBCN ceramic were investigated. Besides, the crystallization behaviors of precursor-derived (PDCs-SiBCN) and mechanical alloying derived (MA-SiBCN) SiBCN ceramics at different temperatures (1200-1700 degree celsius) were compared. Due to different amorphous structures derived from pyrolysis and amorphization processes, the silicon atoms units bonded by sp(3) hybridization in PDCs-SiBCN and MA-SiBCN ceramics are SiC4 and SiC(4-x)Nx tetrahedral structure, respectively. Due to the phase separation of SiC(4-x)Nx tetrahedral structure at higher temperatures (>1400 degree celsius), PDCs-SiBCN ceramic has a higher resistance to crystallization but will suffer obvious carbothermal reduction process of Si3N4 during crystallization. Finally, the crystallization kinetics of SiC in MA-SiBCN ceramic were investigated. The temperature dependence of SiC crystallization in MA-SiBCN ceramic obeys the Arrhenius-type law with different activation energies in the low and high temperature ranges respectively due to the transition of the rate-controlling mechanisms. |
| Freie Schlagworte: | Precursor-derived SiBCN ceramics (PDCs-SiBCN), Mechanically alloyed SiBCN ceramics (MA-SiBCN), Microstructure, Crystallization behaviors, Crystallization kinetics |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 17 Jan 2025 09:02 |
| Letzte Änderung: | 17 Jan 2025 09:02 |
| PPN: | 525393579 |
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