Фазовая диаграмма системы B-Hf

К оглавлению: Другие диаграммы (Others phase diargams)


B-Hf (Boron-Hafnium) Editor The B-Hf phase diagram is redrawn from [69Rud]. The liquidus boundaries, except for the melting point of B2Hf, are not well defined. Probably influenced by the report of [61Rud] that NaCl-type BHf [53Gla] is an impurity- stabilized phase, [72Por] proposed a similar phase diagram without the BHf phase. However, the existence of FeB-type BHf was confirmed in the temperature range 1200 to 2000 C [88Rog]. A set of thermochemical data was derived by [ 88Rog] from the diagram of [69Rud].-H.O. 53Gla: F.W. Glaser, D. Moskowitz, and B. Post, Trans. AIME, 197, 1119-1120 ( 1953). 61Rud: E. Rudy and F. Benesovsky, Monatsh. Chem., 92, 415-441 (1961) in German. 69Rud: E. Rudy, Ternary Phase Equilibria in Transition Metal-Boron-Carbon- Silicon Systems, Part 4, AFML-TR-65-2, Air Force Materials Lab., Wright- Patterson AFB, OH, 689 p (1969). 72Por: K.I. Portnoi and V.M. Romashov, Poroshk. Metall., (5), 48-56 (1972) in Russian; TR: Sov. Powd. Metall. Met. Ceram., 11, 378-384 (1972). 88Rog: P. Rogl and P.E. Potter, Calphad, 12(3), 207-218 (1988). 1