Phase equilibria and superconductivity in the molybdenum-platinum system

Abstract The phase diagram of the Mo-Pt system was determined by X-ray diffraction methods, metallographic techniques and the direct observation of melting phenomena. Seven single-phase regions were observed: terminal b.c.c. Mo solid solution, A15 (β-W)-type Mo6Pt, disordered h.c.p. Mg type, ordered Mg3Cd — type Mo3Pt2, ortho-rhombic MgCd-type MoPt, orthorhombic MoPt2 and a terminal f.c.c. pt solid solution. Particular attention was paid to the nature of formation of the A15 phase.