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Titel: Experiences with sol-gel bonded high porosity alumina fiber materials for filter applications
Verfasser: Handrick, Karin E.
Mohlratzer, August
Ostertag, Rolf
Sporn, Dieter
Schmidt, Helmut K.
Sprache: Englisch
Erscheinungsjahr: 1988
Quelle: Better ceramics through chemistry III : symposium held April 5-8, 1988, Reno, Nevada, U.S.A / editors, C. Jeffrey Brinker … - Pittsburgh : Materials Research Society, 1988. — (Materials Research Society symposia proceedings ; 121), S. 611-615
SWD-Schlagwörter: Aluminium
Heißgas
Sol-Gel-Verfahren
Filtration
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : InProceedings (Aufsatz / Paper einer Konferenz etc.)
Kurzfassung: High porous alumina fiber structures appear promising for hot gas filtration in particular for diesel particulate traps. For this purpose, however, a method is required for manufacturing of stable shapes resisant to the blow-out by the gas flow. The sol-gel process was expected to be the best suited method for fiber bonding to provide the required stability. The main tasks of the development-work were a uniform isotropic fiber-distribution, the adaptation of the sol-gel-process to the application, and the deliberate synthesis of the gel-derived alumina bonding phase. The appropriate fibrous structure was obtained by a repeated filtration of sol/fiber suspensions. The properties of the ceramic binder were adapted by concentrating the sol and/or adding aluminas or aluminium hydroxides. Testing of prototypes with optimized structures has shown, however, that the stability of the structure decreased after thermal load. The thermal fatigue of alpha-Al2O3 is assumed to be responsible for this failure.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-26361
hdl:20.500.11880/24398
http://dx.doi.org/10.22028/D291-24342
ISBN der Druckausgabe: 0-931837-91-X
SciDok-Publikation: 30-Dez-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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