Ga-Ti (Gallium-Titanium)
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Section III: Supplemental Literature Review
Ga-Ti (Gallium-Titanium) H. Okamoto
The partial Ga-Ti phase diagram in [Massalski2] was adopted from [1985Mur]. A complete diagram was reported by [2001Ant], as shown with dashed lines in Fig. 1. [2002Oka] introduced the work of [2001Ant] and pointed out a few unlikely features in this phase diagram: (a) The liquidus of Ga2Ti is too asymmetric; (b) the two boundaries on the Ga-rich and Ti-rich side of the ␥ + Ga4Ti5 two-phase field are curved inward at high temperatures (at about >1200 °C); and (c) although to a lesser degree, a similar problem may occur for the GaTi3 + (␣Ti) two-phase field. [2003Li] thermodynamically assessed the Ga-Ti system. The calculated phase diagram is shown with solid lines in Fig. 1. Invariant temperatures and compositions in Fig. 1 are from the diagram of [2003Li]. The problems pointed out by [2002Oka], as indicated above, are solved in this phase dia-
Fig. 1
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gram. Therefore, the diagram of [2003Li] is expected to be a better representation of the experimental diagram of [2001Ant]. References 1985Mur: J.L. Murray, The Ga-Ti (Gallium-Titanium) System, Bull. Alloy Phase Diagrams, Vol 6 (No. 4), 19985, p 327-330 2001Ant: N.V. Antonova and L.A. Tretyachenko, Phase Diagram of the Ti-Ga System, J. Alloys Compd., Vol 317-318, 2001, p 398-405 2002Oka: H. Okamoto, Gallium-Titanium, J. Phase Equilib., Vol 23 (No. 5), 2002, p 457-458 2003Li: J.B. Li, J.C. Tedenac, and M.C. Record, Thermodynamic Analysis of the Ga-Ti System, J. Alloys Compd., Vol 358, 2003, p 133-141
Ga-Ti phase diagram
Journal of Phase Equilibria and Diffusion Vol. 26 No. 4 2005
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