Isothermal section of the phase diagram

FIGURE 1 Isothermal section of the phase diagram in the Y-Ni-Pb system at 870 K. 1—YNiPb 2—Y2Ni2Pb 3—Y5NiPb3 4—Y12Ni6Pb 5—Y6Ni2.5Pb0.5. 

Note that the attainment of saturation concentrations does not mean the establishment of equilibrium between the solid and liquid phases because the reaction of formation of intermetallic or other compounds continues to proceed. However, the values found coincide with equilibrium ones which are obtained as an intersection of the lines of constant ratio of dissolving elements, coming out of the corner of the solvent, with the liquidus line of the isothermal section of the phase diagram. 

Isothermal sections of the phase diagrams of each / -Cu-In system have been built for the whole area of compositions. Only the Sc-Cu-In system has not been investigated. The La, Ce, Pr, Nd, Sm -Cu-In systems have been investigated at 870 K in the region of 0-33.3 atomic percent R and at 670 K in the region of 33.3-100 atomic percent R. The Eu, Yb -... 

Fig. 5. Isothermal sections of the phase diagram in the Y-Cu-In system at 870 K. 1 - YCu5 iln6 9 2 -Ycu4 64. 0Ino.36-l.o 3 - YCu2ln 4 - YCuIn 5 - YCuo.53-0.32liil.47-l.68 6-Y2Cu2ln.

Fig. 11. Isothermal section of the phase diagram in the Eu-Cu-In system at 670 K. 1 - EuCu6 5ln6 5 2- EuCu8.5ln2.5 3 - EuCu4ln 4- EuCu2ln3 5 - EuCuIn4 6- EuCuIn2 7 - EuCuo.sIni 5 8- Eu2Cu2ln 9 - Eu2CuIn.

Fig. 13. Isothermal section of the phase diagram in the Tb-Cu-In system at 870 K. 1 - XbCu5 lino 9 2 -TbCu5 4lno i 3 - TbCu2ln 4 - Tb-Culn 5 - TbCuo.56-0.32lni 44-1.68 6-Tb2Cu2ln.

The isothermal sections of the phase diagrams of the /J-4 f-metal-In systems have not been studied prior to our own experimental investigations. Only the ternary compoimds with equiatomic compositions in the i - Rh, Pd, Ag, Cd -In systems were known in the literature. The systems with zirconium, niobium, molybdenum, and technetimn as 4fi -element component have not been studied to date. The Pm-A /-metal-In systems have not been investigated at all. 

Several compounds with equiatomic and other simple stoichiometries have been studied. The isothermal sections of the phase diagrams for these ternary systems have not been investigated. The crystallographic data for the known compoimds are listed in table 5. The stracturally most peculiar compound in the La-Rh-ln system is Lai.i8Rh3ln2 (Esmaeilzadeh et al., 2002), which crystallizes with an incommensurate stmcture. 

Fig. 20. Isothermal section of the phase diagram in the Ce-Pd-In system at 1023 K. rj -left branch Cc2- -j Pdi gshii-j rj - right branch Cej 95Pd2- - cIni j T2 - CegPd24ln r- - Cc4Pd7ln3 74 - CePd2ln T5 - Ce-...

The phase equilibria in the Nd-V-Ge system have been investigated by Salamakha et al. (1994) by means of X-ray analysis of 40 ternary alloys. No ternary compounds were observed. The isothermal section of the phase diagram at 870 K is shown in fig. 56. 

Zavalii and Mikhalenko (1989) have investigated the phase equilibria in the Sc-Re-B system at 1000"C (0-33.3 at.% Sc) and at 600°C (33.3-100at.% Sc), but they did not show figures in their publication. The isothermal section of the phase diagram at 1000°C for the whole concentration region, which is shown in fig. 25, is based on the data of Mikhalenko et al. (1991). Scandium diboride dissolves up to 7 at.% Re. One ternary compound, Sc2ReBe, occurs in the system. Its characteristics are shown in table 14. 

---