Reaction of MoSi2 with niobium and tantalum diborides

Results are provided for a study of the reaction of MoSi 2 with niobium and tantalum diborides. It is established that sections of MoSi 2 –Nb(Ta)B 2 within the quaternary system Mo–Si–B–Nb(Ta) are described by eutectic composition diagrams with a eutectic temperature equal to 1870 and (1890 ± 30)°C....

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Veröffentlicht in:	Refractories and industrial ceramics 2011-11, Vol.52 (4), p.282-284
Hauptverfasser:	Ordan’yan, S. S., Vikhman, S. V., Nagaeva, Yu. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Composites Eutectic composition Glass Materials Science Molybdenum Natural Materials Niobium Quaternary systems Refractories Tantalum Transition metals
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Beschreibung
Zusammenfassung:	Results are provided for a study of the reaction of MoSi 2 with niobium and tantalum diborides. It is established that sections of MoSi 2 –Nb(Ta)B 2 within the quaternary system Mo–Si–B–Nb(Ta) are described by eutectic composition diagrams with a eutectic temperature equal to 1870 and (1890 ± 30)°C. The diboride phase content is 20 and 14 mol.% respectively in systems with NbB 2 and TaB 2 .
ISSN:	1083-4877 1573-9139
DOI:	10.1007/s11148-011-9414-x