Ag-Pm (Silver-Prometium); Silver Binary Systems Ag-Al Ag-Zr, pp
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- Bu səhifədəki naviqasiya:
- Crystal structure
- Fig. 1. Ag-Pm.
- References
| Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys 1
Landolt-Börnstein New Series IV/12A Supplement to IV/5A
Saccone et al. [90 Sac] have estimated phase equilibria assuming similarity to known systems of Ag with lanthanides. Okamoto [91 Oka] has discussed this procedure. The phase diagram given there is reproduced in Fig. 1. Crystal structure Saccone et al. [90 Sac] have predicted the structure and lattice parameters of intermediate phases. Crystallographic data of these compounds are compiled in Table 1.
Phase
Structure Type
Lattice parameters [nm]
a b c
Ag 51 Pm 14 hex
1.270 0.930
β-Ag 2 Pm
α-Ag 2 Pm
ort CeCu 2
0.470 0.693 0.816 AgPm cub CsCl 0.370
Temper
atur e [K] T 1600
1400 1200
1000 800
600 400
200 at % Pm
Ag 10 20 30 40 50 60 70 80 90 Pm Ag-Pm L AgPm
(Ag) ( Pm)
α ( Pm)
β 1234.93K
1263K 1315K
1009K 918K
923K 1043K
1083K 1028K
Ag Pm 51 14 βAg Pm 2 αAg Pm 2 1233K
1163K
Fig. 1. Ag-Pm. Proposed phase diagram [91 Oka]. Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys 2
Landolt-Börnstein New Series IV/12A Supplement to IV/5A
[90 Sac] Saccone, A., Delfino, S., Ferro, R.: Calphad 14 (1990) 161 [91 Oka] Okamoto, H.: J. Phase Equilibria 12 (1991) 390 Document Outline
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