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| INFLUENCE OF TRANSITION METALS OF THIRD LONG PERIOD ON THERMAL STABILITY OF PdSi_(16.5) GLASS |
| NING Yuantao; ZHENG Yun; QI Genxin (Institute of Precious Metals; Kunming) |
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Cite this article:
NING Yuantao; ZHENG Yun; QI Genxin (Institute of Precious Metals; Kunming). INFLUENCE OF TRANSITION METALS OF THIRD LONG PERIOD ON THERMAL STABILITY OF PdSi_(16.5) GLASS. Acta Metall Sin, 1983, 19(5): 133-140.
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Abstract The thermal stability parameters of metallic glasses Pd_(83.5-x)M_xSi_(16.5), where M denoting Hf, Ta, W, Re, Os, Ir, Pt, Ru, and Rh, as both melt quenched and annealed states T_g, T_x, T_p, T_m, T_(liq) and T_(rg), as well as glass transformation and crystallization activation energy, heat of crystallization, Twyman constant, etc. have been determined by DSC and DTA. It is found that the thermal stability of metallic glasses composed by the preceding transition metals, e.g. Hf, Ta, W and Re is increased obviously, hut by the later ones, e.g. Os, Ir, Pt, Ru and Rh, much less influenced. These behaviour has been discussed by the Gaskell's model and Engel-Brewer electron theory of transition metals.
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Received: 18 May 1983
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