A CONSTITUTIONAL INVESTIGATION OF THE MO-PD-RH TERNARY-SYSTEM AT 1100-DEGREES-C

GURLER R., PRATT J.

JOURNAL OF NUCLEAR MATERIALS, vol.186, no.1, pp.39-46, 1991 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 186 Issue: 1
  • Publication Date: 1991
  • Doi Number: 10.1016/0022-3115(91)90350-g
  • Journal Name: JOURNAL OF NUCLEAR MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.39-46
  • Anadolu University Affiliated: No

Abstract

Phase relations in the system Mo-Pd-Rh were studied at 1100-degrees-C using conventionally melted and ultrarapidly solidified samples. Optical microscopy, X-ray diffraction, scanning electron microscopy and electron probe microanalysis were used for phase characterisation. The complete isothermal section at 1100-degrees-C was established. The Mo bcc phase was found to have a very limited solid solution range whereas the ternary fcc solid solution originating on the Pd-Rh binary is the dominant phase in the system at this temperature. The centre of the isothermal is dominated by the ternary extension of the Mo-Rh hcp intermediate phase. The three phase (bcc + fcc + hcp) equilibrium region is located very near to the Mo-Pd binary system. No additional ternary intermediate phases were observed. The results are consistent with an isothermal section reported at higher temperatures.