Relationship between Rheological Behaviour and Final Structure of Al2O3 and YSZ Foams Produced by Replica
Joint Authors
Gómez, S. Y.
Hotza, Dachamir
Alvarez, O. A.
Escobar, J. A.
Rambo, C. R.
Rodrigues Neto, J. B.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Using rheological parameters of ceramic suspensions, it is possible to taylor the structure of the ceramic foams produced by replica.
This method consists in the impregnation of a polymeric flexible template (polyurethane foam) with a ceramic suspension (slurry) containing the appropriate additives, followed by burning out organic compounds and additives and sintering the ceramic structure.
In this work, ceramic foams were produced by the replica method from Al2O3 and 3% Y2O3-ZrO2.
Rheological parameters of the ceramic suspensions were investigated to improve the mechanical performance of final structures.
Different types and quantities of raw materials were combined in order to select the formulations for ceramic foams.
The parameters that have a significant influence on the process are the binder type and the amount of solids.
Significant changes on the hysteresis area of the suspensions resulted in a lower density of macrodefects in the material.
Likewise, when the shear rate viscosity is enhanced, the thickness of the struts increased proportionally.
Lastly, when the hysteresis area magnitude and the ceramic thickness increased, the material with higher uniformity was internally densified, and the stress concentration of the internal defects was smoothed
American Psychological Association (APA)
Gómez, S. Y.& Alvarez, O. A.& Escobar, J. A.& Rodrigues Neto, J. B.& Rambo, C. R.& Hotza, Dachamir. 2012. Relationship between Rheological Behaviour and Final Structure of Al2O3 and YSZ Foams Produced by Replica. Advances in Materials Science and Engineering،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-480673
Modern Language Association (MLA)
Gómez, S. Y.…[et al.]. Relationship between Rheological Behaviour and Final Structure of Al2O3 and YSZ Foams Produced by Replica. Advances in Materials Science and Engineering No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-480673
American Medical Association (AMA)
Gómez, S. Y.& Alvarez, O. A.& Escobar, J. A.& Rodrigues Neto, J. B.& Rambo, C. R.& Hotza, Dachamir. Relationship between Rheological Behaviour and Final Structure of Al2O3 and YSZ Foams Produced by Replica. Advances in Materials Science and Engineering. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-480673
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480673