Liquid phase formation in the system Al2O3–Y2O3–AlN: Part II. Thermodynamic assessment期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Liquid phase formation in the system Al2O3–Y2O3–AlN: Part II. Thermodynamic assessment

Authors:	O Fabrichnaya D Pavlyuchkov R Neher M Herrmann HJ Seifert

Affiliation:	1. Institut für Werkstoffwissenschaft der TU Bergakademie Freiberg, 09599 Freiberg, Germany;2. Fraunhofer Institut für keramische Technologien und Systeme, 01277 Dresden, Germany;3. Institut für Angewandte Materialien am Karlsruher Institut für Technologie, 76344 Eggenstein-Leopoldshafen, Germany

Abstract:	The mixing parameters of liquid phase in the Al₂O₃–Y₂O₃–AlN system were assessed based on differential thermal analysis (DTA) and scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM/EDX) investigations of selected compositions. Phase diagram of the Y₂O₃–AlN system was calculated. Liquidus surface of the Al₂O₃–Y₂O₃–AlN system was constructed and compared with experimental results on primary crystallisation fields. Calculated temperatures of invariant reactions were in agreement with DTA results. Vertical sections of the Al₂O₃–Y₂O₃–AlN system were calculated and compared with experimental data

Keywords:	Aluminium nitride Alumina Yttria CALPHAD method Phase diagram
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