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  4. Colloidal processing and characterization of TiO2–MnO-doped alumina/alumina slurries and tapes
 
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Colloidal processing and characterization of TiO2–MnO-doped alumina/alumina slurries and tapes

Citation Link: https://doi.org/10.15480/882.9588
Publikationstyp
Journal Article
Date Issued
2021-04-07
Sprache
English
Author(s)
Barros, Marcelo Daniel  
Keramische Hochleistungswerkstoffe M-9  
Hotza, Dachamir  
Janßen, Rolf  
Keramische Hochleistungswerkstoffe M-9  
TORE-DOI
10.15480/882.9588
TORE-URI
https://hdl.handle.net/11420/47513
Journal
International Journal of Ceramic Engineering & Science  
Volume
3
Issue
4
Start Page
173
End Page
179
Citation
International Journal of Ceramic Engineering and Science 3 (4): 173-179 (2021)
Publisher DOI
10.1002/ces2.10087
Scopus ID
2-s2.0-85149661336
Publisher
Wiley
Aqueous slurries of alumina doped with manganese and titanium oxides were developed. The powders and tapes were investigated by scanning electron (SEM) microscopy, X-ray diffractometry (XRD), and thermal analyses (TG/DSC). The stability and rheology of colloidal suspensions of undoped and doped alumina suspensions were investigated. At neutral pH of 7, pure alumina and MnO–TiO2 dopant particles present positive and negative surface charges and are prone to heterocoagulation. Optimized colloidal processing through proper adjustment of parameters was achieved to reach particle stabilization. The surface charge of the oxide particles was negative, and the suspensions did not agglomerate at a pH of 7 and higher. Tapes were cast, dried, and burned out. The thermal analyses revealed the release of residual water and decomposition of short-chain organics at temperatures under 215°C and of long-chain additives over 300°C.
Subjects
alumina
colloidal processing
manganese oxide
tape casting
titanium dioxide
DDC Class
620.1: Engineering Mechanics and Materials Science
Funding(s)
CAPES/PRINT 88881.310728/2018-0
SFB 986: Teilprojekt B02 - Feste und leichte Hybridwerkstoffe auf Basis nanoporöser Metalle  
Funding Organisations
Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES)
Deutscher Akademischer Austauschdienst (DAAD)  
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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Int J Ceramic Engine Sci - 2021 - Daniel Barros - Colloidal processing and characterization of TiO2 MnO‐doped alumina.pdf

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