Logo des Repositoriums
Zur Startseite
  • English
  • Deutsch
Anmelden
  1. Startseite
  2. SuUB
  3. Forschungsdokumente
  4. Aluminium acetate as alternative cross-linker for temperature controlled gel-casting and joining of ceramics
 
Zitierlink DOI
10.26092/elib/2483
Verlagslink DOI
10.1016/j.jeurceramsoc.2015.12.011

Aluminium acetate as alternative cross-linker for temperature controlled gel-casting and joining of ceramics

Veröffentlichungsdatum
2016-01-15
Autoren
Brandes, Christoph  
Hoog Antink, Marieke Melanie  
Kroll, Stephen  
Treccani, Laura  
Rezwan, Kurosch  
Zusammenfassung
In an earlier established gel-casting process, the biopolymer alginate is cross-linked with Ca2+-ions released through the temperature controlled dissolution of calcium iodate-particles (Ca(IO3)2). In this study, aluminum acetate (AlAc) is compared to Ca(IO3)2 as an alternative temperature controlled cross-linker for an alginate–alumina slurry. Both cross-linkers are characterized regarding gel-forming properties, resulting microstructure, impurities, mechanics of sintered parts and the ability of joining ceramic blocks in the green state via connecting gelation with and without adding slurry. Rheological measurements show that both cross-linker have a similar gelling behavior and lead to gelled blocks of high quality. AlAc-particle create a denser and more homogenous microstructure, while Ca(IO3)2-particles induce pores, abnormal grain growth and lower mechanical values. Nevertheless Ca(IO3)2 shows excellent joining properties which makes it a suitable alternative to pressure joining. In summary, AlAc is an excellent alternative cross-linker but Ca(IO3)2 remains the method of choice for joining gelled bodies.
Schlagwörter
Gel-casting

; 

Ceramic joining

; 

Ionotropic gelation

; 

Gel-forming rheology

; 

Microstructure

; 

Mimenima
Verlag
Elsevier
Institution
Universität Bremen  
Fachbereich
Zentrale Wissenschaftliche Einrichtungen und Kooperationen  
Institute
MAPEX Center for Materials and Processes  
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Journal of the European Ceramic Society  
Band
36
Heft
5
Startseite
1241
Endseite
1251
Seitenzahl
11
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Lizenz
https://creativecommons.org/licenses/by-nc-nd/4.0/
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

C. Brandes, M. Hoog Antink, S. Kroll, L. Treccani, K. Rezwan, Aluminium acetate as alternative cross-linker_ 2016_accepted version.pdf

Size

3.33 MB

Format

Adobe PDF

Checksum

(MD5):317c3f43753783fdd9abcb4b627845df

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Datenschutzbestimmungen
  • Endnutzervereinbarung
  • Feedback schicken