TITLE:
Phase Relations in Si-Al-Y-O-C Systems
AUTHORS:
Kan Wu, Laner Wu, Zhenkun Huang, Yong Jiang, Yun Ma
KEYWORDS:
Phase Relation, Phase Diagram, SiC, SiO2, YAG, YAM, YAP, Al6Si2O13
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.3 No.7,
July
1,
2015
ABSTRACT:
The present work investigated the phase
relations in SiC-Al2O3-Y2O3-SiO2 (Si-Al-Y-O-C) system. As a continuation of our
previous works, the purpose of this study is to understand the high temperature
reaction behaviors of SiO2 in the system and its effect on the phase relations
of the valuable system of SiC-Al2O3-Y2O3. The phase compositions of six
solid-state reacted samples with different components of Y2O3:Al2O3:SiC:SiO2 were analyzed by XRD. The phase relations of the systems were determined. The
subsolidus phase diagrams of ternary Al2O3-SiC-SiO2 system and the tentative
phase diagram of an extended quaternary Y2O3-Al2O3-SiC-SiO2 system were
presented latter involving several coexisting regions of four phases. The high
temperature reaction behavior of SiO2 in the system and its effect on the phase
relations of system were discussed.