Rheological properties of alumina ceramic slurries for ceramic shell-mould fabrication

Joanna Szymańska , Paweł Wiśniewski , Marcin Małek , Jarosław Mizera

Abstract

This research is about the properties of ceramic slurries prepared from hydrous nano-alumina-based binder and a corundum matrix used for fabricating the prime coat of ceramic shell moulds. Solid-state alumina powders with different granulations were used. The modification of the technological properties of the prepared slurries was based on additions of a polyacrylic binder with different amounts of polymer with respect to the alumina for different powder ratios. The slurries were prepared and tested in a mechanical mixer. During the slurry preparation (within 96 h), the plate weight, Zahn cup 4# viscosity and dynamic viscosity were controlled. The morphology and chemical properties of corundum powders and polymer were characterized with SEM and powder-grain-size distribution. The obtained results of the corundum-based ceramic slurries indicate that the application of a polymeric binder with various concentrations based on nano-alumina oxides causes different properties in comparison to the other commonly used binders.
Author Joanna Szymańska ZPM
Joanna Szymańska,,
- Division of Materials Design
, Paweł Wiśniewski ZPM
Paweł Wiśniewski,,
- Division of Materials Design
, Marcin Małek ZPM
Marcin Małek,,
- Division of Materials Design
, Jarosław Mizera ZPM
Jarosław Mizera,,
- Division of Materials Design
Journal seriesMateriali in Tehnologije, ISSN 1580-2949
Issue year2016
Vol50
No5
Pages735-738
Publication size in sheets0.5
Keywords in EnglishAlumina powder; Ceramic slurries; Investment casting; Shell moulds
DOIDOI:10.17222/mit.2015.188
Languageen angielski
File
6 Szymanska.pdf (file archived - login or check accessibility on faculty) 6 Szymanska.pdf 185.62 KB
Score (nominal)15
ScoreMinisterial score = 15.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 15.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.436 (2) - 2016=0.483 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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