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Structure of the Eutectic in the LaB6–ScB2 System

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Powder Metallurgy and Metal Ceramics Aims and scope

Alloys in the LaB6–ScB2 system are synthesized using unis for electron-beam melting and induction zone melting without crucible in pure helium. Metallographic analysis and X-ray diffraction are used to establish that the alloys form an eutectic with 50 wt.%, 56 vol.%, and 78 mol.% ScB2, whose colonies solidify as cubic bicrystalline lanthanum hexaboride and plates of scandium diboride. In the solidification process, the plates divide into rods under the influence of scandium dodecaboride ScB12, resulting from scandium diboride evaporation.

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Authors and Affiliations

  1. National Technical University of Ukraine ‘Kiev Polytechnic Institute’, Kiev, Ukraine

    G. P. Kysla, P. I. Loboda & L. Geshmati

Authors
  1. G. P. Kysla
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  2. P. I. Loboda
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  3. L. Geshmati
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Correspondence to G. P. Kysla.

Additional information

Translated from Poroshkovaya Metallurgiya, Vol. 53, Nos. 7–8 (498), pp. 137–144, 2014.

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Kysla, G.P., Loboda, P.I. & Geshmati, L. Structure of the Eutectic in the LaB6–ScB2 System. Powder Metall Met Ceram 53, 479–484 (2014). https://doi.org/10.1007/s11106-014-9640-0

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  • DOI: https://doi.org/10.1007/s11106-014-9640-0

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