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The modified embedded atom method proposed by authors has been applied to calculating the enthalpies of formationof random alloys and the ordered intermetallic compounds for noble metal binary systems bearing Rh or Ir. The presentresults are in good agreement with those of Miedema theory, available experiments and the first-principles quantummechanics calculations. The present results indicate that Cu-Rh, Cu-Ir, Ag-Rh, Ag-Ir, Au-Rh, Au-Ir, Pd-Rh and Pd-Irsystems are repulsive, however, Ni-Rh, Ni-Ir, Pt-Ir, Pt-Rh and Rh-Ir systems form solid solutions and Ni-Rh, Ni-Irand Pt-Rh show ordering tendency
The modified embedded atom method proposed by authors has been applied to calculating the enthalpies of formation of random alloys and the ordered intermetallic compounds for noble metal binary systems bearing Rh or Ir. The present results are in good agreement with those of Miedema theory, available experiments and the first-principles quantum mechanical calculations. The present results that that Cu-Rh, Cu-Ir, Ag-Rh, Ag-Ir, Au- Rh, Au- Ir, Pd- Rh and Pd- Irsystems are repulsive, however, , Ni-Ir, Pt-Ir, Pt-Rh and Rh-Ir systems form solid solutions and Ni-Rh, Ni-Irand Pt-Rh show ordering tendency