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Microstructural Aspects during the Preparation of Y(3)Al(5)O(12) by Combustion Synthesis and Temperature Field Simulation

Title
Microstructural Aspects during the Preparation of Y(3)Al(5)O(12) by Combustion Synthesis and Temperature Field Simulation
Authors
Song, YPLi, JTChen, YXJi, WWLee, CSKim, HS
POSTECH Authors
Lee, CSKim, HS
Date Issued
Apr-2011
Publisher
JAPAN INST METALS
Abstract
The combustion front quenching method (CFQM) combined with the temperature field simulated using the finite element method was used to investigate the microstructural aspects of the fabrication of transparent Y3Al5O12 via combustion synthesis. The simulated results indicate that there are three regions corresponding with the temperature distribution whose microstructural aspects were studied. The composite mixtures of the products cannot be separated depending only on their gravities. The filamentous profile of aluminum along with many aluminous intermediate products are detected by XRD, SEM and EDS analysis in the preheat region, which indicates that the heat-transfer can affect the mass-transfer process and the subsequent reaction process. The microstructural aspects show that the combustion reaction of the Al/NiO/Y2O3 powder mixture was initiated by the melting of Al particles. [doi:10.2320/matertrans.M2010295]
Keywords
bulk Y3Al5O12 (YAG); microstructural aspects; combustion front quenching method (CFQM); combustion synthesis; temperature distribution simulation; FINITE-ELEMENT-ANALYSIS; TIC-FE CERMET; MECHANISM; COMPOSITE; POWDER; SYSTEM; PHASE; WAVE; SHS; YAG
URI
http://oasis.postech.ac.kr/handle/2014.oak/16575
DOI
10.2320/MATERTRANS.M2010295
ISSN
1345-9678
Article Type
Article
Citation
MATERIALS TRANSACTIONS, vol. 52, no. 4, page. 685 - 690, 2011-04
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 LEE, CHONG SOO
Graduate Institute of Ferrous Technology
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