Article ID Journal Published Year Pages File Type
10629667 Journal of the European Ceramic Society 2012 15 Pages PDF
Abstract
The Nd2O3-Al2O3 and ZrO2-Nd2O3-Al2O3 systems were simultaneously re-assessed to reproduce experimental data from present study and literature. Phase relations in the Nd2O3-Y2O3-Al2O3 system were investigated by XRD, electron microscopy and DTA for the first time. Invariant reaction in solid phases B + YAM = NdAlO3 + C was determined to occur at 1863 K. The eutectic reaction liquid = YAG + NdAlO3 + Al2O3 was determined to occur at 2042 K and composition Al2O3-10 mol.% Nd2O3-13 mol.% Y2O3. The obtained data were used to assess thermodynamic parameters of this system. Isothermal sections were calculated in the range 1523-1923 K. Liquidus surface of the Nd2O3-Y2O3-Al2O3 system was calculated. The derived databases were combined with already available descriptions of the ZrO2-Nd2O3-Y2O3 and ZrO2-Y2O3-Al2O3 systems into four-oxide database.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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