Generalization of Information on Phase Diagrams
of Binary Hafnium Systems

V. V. Brinza^a,*, N. V. Nesterova^a,**, and O. N. Perk^b,***

^aNational University of Science and Technology “MISiS”, Leninskii pr. 4, Moscow, 119049 Russia

*e-mail: brinzavv@misis.ru

**e-mail: ppdu@misis.ru

^bHigh-Technology Research Institute of Inorganic Materials, ul. Rogova 5a, Moscow, 123098 Russia

***e-mail: working@bochvar.ru

Abstract—Prospects of applying the analogy principle when investigating binary hafnium compounds are con-
sidered. The classification of binary hafnium compounds by the main distinctive features of their phase dia-
grams is developed using a taxonomic approach. Seven uniform groups of compounds under consideration are
distinguished and distinctive features of phase diagrams of each group are determined. The rationality of a two-
dimensional metric, the application of which ensures obtaining qualitative evaluations of similarity of various
diagrams and reveals the analog compounds, is substantiated. The results of classification can be used when
substantiating the compositions of certain basic hafnium alloys and master alloys.

Keywords: hafnium, binary compounds, binary phase diagrams, classification, taxonomy, analog, promising
alloys

DOI: 10.3103/S1067821213050064

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