Abstract
The isothermal sections of the Co-Nb-Ni ternary system at 1373 K and the Ni-Mo-Re ternary system at 1473 K were determined by means of diffusion triple and electron probe microanalysis (EPMA). The results indicate that there are three three-phase regions found in the Co-Nb-Ni ternary system at 1373 K: (Ni, Co) + NbCo 3 + Ni 3Nb, NbCo 3 + NbCo 2 + Ni 3Nb, and NbCo 2 + μ + Ni 3Nb; and four three-phase regions found in the Ni-Mo-Re ternary system at 1473 K: Re + Ni + χ, Ni + NiMo + σ, σ + χ + Ni, and σ + Mo + NiMo. No ternary compound is observed in the two isothermal sections. The isothermal sections are contrasted with the previous study.
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