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Solidification behaviour of BaB 2 O 4 melts
Author(s) -
Ovanesyan K. L.,
Petrosyan A. G.,
Shirinyan G. O.
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170240904
Subject(s) - platinum , melting point , phase (matter) , materials science , melting temperature , phase transition , thermodynamics , congruent melting , mineralogy , analytical chemistry (journal) , phase diagram , chemistry , composite material , organic chemistry , physics , catalysis
Experimental evidence has been obtained that both α‐ and β‐phase BaB 2 O 4 material can be grown directly from pure melts. Growth of α‐phase material onto a platinum rod is initiated by α‐phase structural centers present in the melts which are stable at temperatures around or just above the melting point. Overheated melts in which solid nuclei are destroyed have modified freezing characteristics and form β‐phase material. β‐phase material can be produced onto a platinum rod at temperatures well above the reported phase transition temperature.