By B. Predel (auth.), B. Predel (eds.)
For all people enthusiastic about the expertise and alertness of metals and alloys and with the advance of latest metal fabrics a close wisdom of part equilibria is quintessential. additionally, details at the thermodynamical and crystallographical information of the platforms below research is key, and infrequently metastable crystalline levels in addition to quasicrystalline or amorphous alloys are of interest.
The first quantity of this sequence has been released in 1991. because then a notable growth within the research of binary alloys has been accomplished, which necessitates a compilation of the hot information in complement volumes. the current subvolume IV/12 varieties the complement to the subvolume IV/5A. It covers the literature as much as the yr 2000.
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Extra resources for Ac-Ag ... Au-Zr: Supplement to Subvolume IV/5A
93 Kar]. Thermodynamics Recently, Hassam et al. [94 Has] have determined by high-temperature calorimetry the enthalpies of mixing of liquid alloys at 878 K. The results are given in Fig. 1. They deviate not seriously from those published by Sommer et al. [80 Som], determined at temperatures between 800 K and 1180 K. Thermodynamic activities at 1000 K for liquid alloys have been calculated by Karakaya et al. [93 Kar]. 99 500 400 Ag Fig. 1. Ag-Bi. Bi-rich side of phase diagram Ag-Bi [93 Kar]. 2 4 6 at % Bi Landolt-Börnstein New Series IV/12A Supplement to IV/5A 8 10 Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys 2500 Ag-Bi -1 Entropy DH [kJ g-atom ] 2000 L 1500 1000 500 0 Ag 10 20 30 40 50 at % Bi 70 60 80 90 Bi Fig.
Of Standards, Gaithersburg, MD 20899 (1978); and “Phase Behaviour and related Properties of Rare-Earth Borides”, Refractory Materials, Vol. M. B. (Editor-in-Chief): “Binary Alloy Phase Diagrams”, second edition, The Materials Information Society, ASM International, Materials Park, Ohio (1992) Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys 1 Ac – Cr (Actinium – Chromium) Phase diagram Ac-Cr alloys, by splat cooling, can very easily solidify in an amorphous state [83 Gie].
For more discussion see [Hultgren]. Enthalpies of mixing of liquid alloys obtained by [95 Lim], optimizing the set of thermodynamic data present in the literature, are shown in Fig. 3. As pointed out by these authors ([95 Lim]) the scatter of experimentally determined ∆HL-values published by Kawakami [30 Kaw] and by Itagaki et al. [69 Ita] is rather high. Thus, the enthalpies of mixing shown in Fig. 3 are the more realistic ones. Thermodynamic activities aSAl for solid alloys, as calculated in the frame of optimization thermodynamic data of this system, are given in Fig.