Фазовая диаграмма системы Li-Ti

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Li-Ti (Lithium-Titanium) C.W. Bale The Li-Ti system is virtually completely immiscible in both the solid and liquid states. There is no evidence of intermetallic compound formation in this system, nor in any of the other alkali metal-group IVa systems. The solubility of Ti in liquid Li is so small that it does not appear in the assessed diagram. Based on the experimental data of [61Lea], the calculated solubility is 0.0002 at.% Ti. The solubility of Li in solid Ti increases from 0.0007 at.% Li at 300 C to approximately 0.029 at.% Li at 1050 C [63Pek]. A discontinuity occurs between 1050 and 1150 C, and the solubility decreases to approximately 0.00015 at.% Li at higher temperatures. [Shunk] attributed the discontinuity to the peritectic reaction L + (bTi) = (aTi). At 1 atm pressure and above the temperature of fusion of Ti (1670 C), the vapor phase, which is almost pure Li, is in equilibrium with virtually pure liquid Ti. From vapor pressure calculations, at 2000 C, the composition of the gas phase (Li(g) + Li2(g) + Ti(g)) is estimated to be approximately 0.038 at.% Ti in equilibrium with almost pure liquid Ti. 61Lea: H.W. Leavenworth and R.E. Clearly, Acta Metall., 9, 519 (1961). 63Pek: A.I. Pekarev, E.M. Savitskii, and M.A. Tylkina, Inst. Met. A.A. Baikova, Akad., Nauk, SSSR, 12, 198 (1963) in Russian. Published in Bull. Alloy Phase Diagrams, 10(2), Apr 1989, and Phase Diagrams of Binary Titanium Alloys, 1987. Complete evaluation contains 3 figures, 1 table, and 8 references. 1