The System Si3N4-SiO2-Y2O3 |
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| Authors: | L J GAUCKLER&#; H HOHNKE&#; T Y TIEN&#; |
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| Affiliation: | Department of Materials and Metallurgical Engineering, The University of Michigan, Ann Arbor, Michigan 48109 |
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| Abstract: | Subsolidus phase relations were established in the system Si3N4-SiO2-Y2O3. Four ternary compounds were confirmed, with compositions of Y4Si2O7N2, Y2Si3O3N4, YSiO2N, and Y10(SiO4)6N2. The eutectic in the triangle Si3N4-Y2Si2O7-Y10(SiO4)6N2 melts at 1500°C and that in the triangle Si2N2O-SiO2-Y2Si2O7 at 1550°C. The eutectic temperature of the Si3N4-Y2Si2O7 join was ～ 1520°C. |
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