Refractories and Industrial Ceramics

, Volume 52, Issue 4, pp 282–284 | Cite as

Reaction of MoSi2 with niobium and tantalum diborides

  • S. S. Ordan’yan
  • S. V. Vikhman
  • Yu. S. Nagaeva

Results are provided for a study of the reaction of MoSi2 with niobium and tantalum diborides. It is established that sections of MoSi2–Nb(Ta)B2 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 NbB2 and TaB2.


eutectic composition diagram molybdenum disilicide tantalum diboride niobium diboride solidus liquidus melting temperature 


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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  • S. S. Ordan’yan
    • 1
  • S. V. Vikhman
    • 1
  • Yu. S. Nagaeva
    • 1
  1. 1.St. PetersburgRussia

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