Фазовая диаграмма системы Fe-Tc

К оглавлению: Другие диаграммы (Others phase diargams)


Fe-Tc (Iron-Technetium) H. Okamoto The assessed phase diagram for the Fe-Tc system is adopted from [Moffatt], which is based on [62Dar1], [62Dar2], and [63Buc]. The melting points of the pure elements were adjusted to agree with [Melt]. Only one intermediate phase, the CrFe-type s phase, exists in this system. The (dFe) = (gFe) transition temperature decreases with increasing Tc concentration, but no two-phase field was observed between (dFe) and (gFe). The homogeneity range of s at low temperatures is from 40 to 66 at.% Tc [ 62Dar2]. 62Dar1: J.B. Darby, Jr. and D.J. Lam, USAEC Rep., ANL-6677, 255-256 (1962); quoted in [Shunk]. 62Dar2: J.B. Darby, Jr., D.J. Lam, L.J. Norton, and J.W. Downey, J. Less- Common Met., 4, 558-563 (1962). 63Buc: R.A. Buckley and W. Hume-Rothery, J. Iron Steel Inst. (London), 201, 121-124 (1963). 82Swa: L.J. Swartzendruber, Bull. Alloy Phase Diagrams, 3(2), 161-165 (1982). Submitted to the APD Program. Complete evaluation contains 1 figure, 2 tables, and 6 references. 1