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  4. Obtaining complex‐shaped oxide ceramic composites via ionotropic gelation
 
Zitierlink DOI
10.26092/elib/2629
Verlagslink DOI
10.1111/jace.15990

Obtaining complex‐shaped oxide ceramic composites via ionotropic gelation

Veröffentlichungsdatum
2018-08-23
Autoren
Saint Martin Almeida, Renato  
Pereira, Tamires F. S.  
Tushtev, Kamen  
Rezwan, Kurosch  
Zusammenfassung
In this communication, we present a new processing method for obtaining oxide ceramic composites based on the ionotropic gelation technique. Nextel 610 fiber fabrics were infiltrated by an alumina-zirconia suspension with a total solid content of 50 vol.% and alginate as the binder. Subsequently, the suspension was slowly cross-linked by adding Al3+ cations and transferred to a gel state. The gelled fabric layers could be easily cut, stacked and shaped, as well as joined to other ceramic materials and composites. Furthermore, the fiber content could be adjusted by pressing the layers together. In summary, the composites produced with this technique presented a very good fiber bundle infiltration, matrix with fine porosity and excellent mechanical properties. Nextel 610/alumina-zirconia composites sintered at 1200°C for 1 h showed bending strength of 306 MPa, interlaminar shear strength of 9.8 MPa and nominal fracture toughness of 13.6 MPa m0.5.
Schlagwörter
oxide ceramic composites

; 

ionotropic gelation technique

; 

fiber bundle infiltration

; 

interlaminar shear strength

; 

nominal fracture toughness

; 

Mimenima
Verlag
Wiley
Institution
Universität Bremen  
Fachbereich
Zentrale Wissenschaftliche Einrichtungen und Kooperationen  
Institute
MAPEX Center for Materials and Processes  
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Journal of the American Ceramic Society  
Band
102
Heft
1
Startseite
53
Endseite
57
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Lizenz
Alle Rechte vorbehalten
Sprache
Englisch
Dateien
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Name

ALMEIDA - Obtaining complex-shaped oxide ceramic_Deckblatt_pdfa1.pdf

Size

814.52 KB

Format

Adobe PDF

Checksum

(MD5):6fb67c6313b6385c73b8c5885291274d

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