Sedláček, Jaroslav ; Galusek, Dušan ; Riedel, Ralf ; Hoffmann, Michael J. (2011)
Sinter-HIP of polymer-derived Al2O3–SiC composites with high SiC contents.
In: Materials Letters, 65 (15-16)
doi: 10.1016/j.matlet.2011.04.094
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Submicrometer Al2O3 composites with more than 20 vol.% of SiC particles were produced using a multiple infiltration of porous bodies with a liquid polymer SiC precursor. The fully dense composites were successfully densified using a sinter-HIP process. Parameters of sintering and HIP steps are discussed with respect to both densification and microstructure evolution of the composites. The initial pressure during the sintering step plays an important role for the preparation of fully dense composites with a submicrometer alumina matrix at 1750 °C. Optimized densification schedule of sinter-HIP represents a novel approach of densification at relatively mild conditions compared to previously reported or common densification methods of Al2O3–SiC composites with high SiC content, such as pressureless sintering, hot pressing and post-HIPing. The method expands the possibilities for preparation of alumina based composites with SiC volume fraction > 20 vol.%, filling the gap in available literature data.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Sedláček, Jaroslav ; Galusek, Dušan ; Riedel, Ralf ; Hoffmann, Michael J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Sinter-HIP of polymer-derived Al2O3–SiC composites with high SiC contents |
| Sprache: | Englisch |
| Publikationsjahr: | August 2011 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Letters |
| Jahrgang/Volume einer Zeitschrift: | 65 |
| (Heft-)Nummer: | 15-16 |
| DOI: | 10.1016/j.matlet.2011.04.094 |
| Kurzbeschreibung (Abstract): | Submicrometer Al2O3 composites with more than 20 vol.% of SiC particles were produced using a multiple infiltration of porous bodies with a liquid polymer SiC precursor. The fully dense composites were successfully densified using a sinter-HIP process. Parameters of sintering and HIP steps are discussed with respect to both densification and microstructure evolution of the composites. The initial pressure during the sintering step plays an important role for the preparation of fully dense composites with a submicrometer alumina matrix at 1750 °C. Optimized densification schedule of sinter-HIP represents a novel approach of densification at relatively mild conditions compared to previously reported or common densification methods of Al2O3–SiC composites with high SiC content, such as pressureless sintering, hot pressing and post-HIPing. The method expands the possibilities for preparation of alumina based composites with SiC volume fraction > 20 vol.%, filling the gap in available literature data. |
| Freie Schlagworte: | Ceramics, Alumina, Silicon carbide, Polymer derived, Sintering |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 04 Apr 2012 09:19 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
| PPN: | |
| Sponsoren: | The financial support of this work by the European Commission under Marie Curie EIF programme No. 25284, Alexander von Humboldt Foundation, Bonn, Germany, grant APVV LPP 0297–09, This publication is the result of implementation of the project: Centre for materials, layers and systems for applications and chemical processes under extreme conditions — Stage II supported by the Research & Development Operational Programme funded by t |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum