Фазовая диаграмма системы Ba-Ga

К оглавлению: Другие диаграммы (Others phase diargams)

Ba-Ga (Barium-Gallium) V.P. Itkin and C.B. Alcock The assessed phase diagram for the Ba-Ga system is based on the work of [66Bru] . The lattice parameter of Ba does not change with composition in Ba-rich alloys [66Bru]. This indicates a very small solubility of Ga in (Ba). The solubility of Ba in (Ga) is assumed to be very small. The peritectic formation of Ba-Ga is extremely slow. Three months' annealing at 400 C were not sufficient to obtain a completely homogeneous sample. An approximate formula Ba10-12Ga was ascribed to this compound by [ 66Bru]. A more accurate formula, Ba10Ga, was determined by [79For]. BaGa2 does not have a measurable homogeneity range [66Bru]. Samples with 64.2 and 69.1 at.% Ba had the same parameters within 0.002 Џ as that with 66.9 at.% Ga. 55Ian: A. Iandelli, Atti Accad. Naz. Lincei, Cl. Sc. Fis. Mat. Nat., 19, 39-43 (1955) in Italian. 65Bru: G. Bruzzone, Acta Crystallogr., 18, 1081-1082 (1965). 66Bru: G. Bruzzone, Bull. Sci. Fac. Chim. Industr. Bologna, 24, 113-132 (1966) in Italian. 79For: M.L. Fornasini and F. Merlo, Rev. Chim. Miner., 16, 458-464 (1979). 83For: M.L. Fornasini, Acta Crystallogr. C, 39, 943-946 (1983). Submitted to the APD Program. Complete evaluation contains 1 figure, 3 tables, and 7 references. Special Points of the Ba-Ga System