Phase diagrams of rare earth metals with gallium

Thermodynamic description of the Ga-Yb binary system

“…A recent assessment of the Ga-Yb system by Palenzona and Cirafici [10] is based on the original references, essentially the works of [11][12][13][14][15]. [11,12,14] investigated the Ga-Yb phase diagram by DTA and X-ray analysis.…”

Thermodynamic description of the Gallium-Lanthanum binary system

“…The same phase diagram was reproduced by Massalski et al [3], figure 1. The assessed phase diagram is essentially based on the work of [4][5][6][7]. The equilibrium phases are: (1) the liquid L; (2) the six intermetallic compounds Ga 6 La, Ga 4 La [8][9][10], Ga 2 La with a homogeneity range (region), GaLa, Ga 3 La 5 and GaLa 3 ; and (3) the four terminal solid solutions (Ga), (La), (La) and (La) with negligible solubilities.…”

“…Review of experimental data Yatsenko [4] and Yatsenko et al [5] investigated the GaLa equilibrium phase diagram by means of thermal analysis, microscopy, and X-ray diffraction. The resulting phase diagram showed four intermetallic phases Ga 2 La (congruent melting at 1450°C), GaLa, Ga 3 La 5 , and GaLa 3 (peritectic formation at 1010°C, 825°C, and 615°C respectively).…”

“…There were also two eutectics LiqGa 6 La+(Ga) at 30°C and LiqGaLa 3 +(βLa) at 550°C and about 80 at.% La. To describe the eutectic on the Ga-rich side, [4] and [5] used the term "degenerate," presumably because the solidus temperature does not differ significantly from (Ga) or Ga in (La) was observed by [4] and [5], and all the intermediate phases (except Ga 2 La) appeared to be line compounds. Pelleg et al [6] investigated the Ga-rich side of the Ga-RE systems, finding the Ga 6 La compound.…”

“…A critical evaluation of the data available in the literature for the Ga-La system has been reported by Palenzona and Cirafici [2]. They made the assessment of the phase diagram principally on the basis of the experimental investigation carried out by [4][5][6][7]. In their work, Dayan et al [7], studied samples prepared at 600°C and around 80 at.…”