Hydrogen potential-temperature diagrams are presented for the V-H, Nb-H and Ta-H systems. The diagrams have been constructed from published thermodynamic data for the single-phase and two-phase regions in conjunction with the temperature-composition phase diagrams. © 1985.
Oates, W. A., Kuji, T., & Flangan, T. B. (1985). Hydrogen potential-temperature diagrams for the V-H, Nb-H and Ta-H systems. Journal of The Less-Common Metals, 105(2), 333–338. https://doi.org/10.1016/0022-5088(85)90421-7