One Component Metal Oxide Sintering Additive for beta-SiC Based on Thermodynamic Calculation and Experimental Observations

Title
One Component Metal Oxide Sintering Additive for beta-SiC Based on Thermodynamic Calculation and Experimental Observations
Author(s)
노비얀토 알피안[노비얀토 알피안]윤당혁
Keywords
SILICON-CARBIDE CERAMICS; MATRIX COMPOSITES; WETTING BEHAVIOR; ALPHA; ALUMINA
Issue Date
201203
Publisher
KOREAN INST METALS MATERIALS
Citation
METALS AND MATERIALS INTERNATIONAL, v.18, no.1, pp.63 - 68
Abstract
This paper examines a range of metal oxides, including those containing relatively safe elements under neutron irradiation, such as Cr, Fe, Ta, Ti, V and W, as well as widely used oxides, Al2O3, MgO and Y2O3, as a sintering additive for beta-SiC theoretically and experimentally. After selecting the most probable SiC oxidation reaction at 1973-2123 K, the condition where the metal oxide additive does not decompose SiC was calculated based on the standard Gibbs formation free energies. Thermodynamic calculations revealed that Al2O3, MgO and Y2O3 could be an effective sintering additive without decomposing SiC under hot pressing conditions, which was demonstrated experimentally. On the other hand, no one component metal oxide that contains a safe element for nuclear reactor applications was found to be an effective sintering additive due to the formation of metal carbides and/or silicides. Overall, the simulation based on thermodynamic calculations was found to be quite useful for selecting effective metal oxide additives.
URI
http://hdl.handle.net/YU.REPOSITORY/29536http://dx.doi.org/10.1007/s12540-012-0008-z
ISSN
1598-9623
Appears in Collections:
공과대학 > 신소재공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE