Yu, Zhaoju ; Wang, Zhenyue ; Dong, Xichao ; Sun, Jia ; Luan, Xingang ; Riedel, Ralf (2023)
Liquid single-source-precursor synthesis and phase evolution of SiC-HfC-C ceramics nanocomposites with core-shell structured SiC@C and HfC@C nanoparticles.
In: Open Ceramics, 15
doi: 10.1016/j.oceram.2023.100430
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Liquid polymeric precursors have found wide applications as a matrix source for continuous fiber reinforced ceramic matrix composites (CMCs) because of their excellent fluidity and high ceramic yield. In the present study, a processable liquid single-source-precursor was synthesized using allylhydropolycarbosilane (AHPCS) and low-cost hafnium tetrachloride (HfCl4) as raw materials to form final SiC-HfC-C nanocomposites by well-known polymer-derived ceramic (PDC) approach. The precursor synthesis, thermal behavior, polymer-to-ceramic transformation and ceramic phase evolution were investigated by FT-IR, TGA, XRD and TEM. The TGA results show that the obtained single-source-precursor exhibits very high ceramic yields of over 80.0 wt% after heat treated at 1400 °C. After annealing at 1600 °C, the resultant SiC-HfC-C nanocomposites contain SiC@C and HfC@C nanoparticles with SiC and HfC as cores and amorphous carbon as shells. The present single-source-precursor is candidate material for CMC applications due to its liquidity and high ceramic yield.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Yu, Zhaoju ; Wang, Zhenyue ; Dong, Xichao ; Sun, Jia ; Luan, Xingang ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Liquid single-source-precursor synthesis and phase evolution of SiC-HfC-C ceramics nanocomposites with core-shell structured SiC@C and HfC@C nanoparticles |
| Sprache: | Englisch |
| Publikationsjahr: | September 2023 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Open Ceramics |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| DOI: | 10.1016/j.oceram.2023.100430 |
| Kurzbeschreibung (Abstract): | Liquid polymeric precursors have found wide applications as a matrix source for continuous fiber reinforced ceramic matrix composites (CMCs) because of their excellent fluidity and high ceramic yield. In the present study, a processable liquid single-source-precursor was synthesized using allylhydropolycarbosilane (AHPCS) and low-cost hafnium tetrachloride (HfCl4) as raw materials to form final SiC-HfC-C nanocomposites by well-known polymer-derived ceramic (PDC) approach. The precursor synthesis, thermal behavior, polymer-to-ceramic transformation and ceramic phase evolution were investigated by FT-IR, TGA, XRD and TEM. The TGA results show that the obtained single-source-precursor exhibits very high ceramic yields of over 80.0 wt% after heat treated at 1400 °C. After annealing at 1600 °C, the resultant SiC-HfC-C nanocomposites contain SiC@C and HfC@C nanoparticles with SiC and HfC as cores and amorphous carbon as shells. The present single-source-precursor is candidate material for CMC applications due to its liquidity and high ceramic yield. |
| Freie Schlagworte: | SiC; HfC; Polymer-derived ceramic; Ceramic nanocomposites |
| Zusätzliche Informationen: | Artikel-ID: 100430 // Part of Special Issue "Polymer-Derived Ceramics (PDCs): From preceramic polymer chemistry to functional materials" |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 15 Aug 2023 06:54 |
| Letzte Änderung: | 30 Aug 2023 11:47 |
| PPN: | 510629032 |
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