INFLUENCE OF RARE-EARTH ELEMENTS ON THERMAL STABILITY OF PdSi_(16.5) GLASS

Acta Metall Sin

1989, Vol. 25

Issue (4): 126-131 DOI:

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INFLUENCE OF RARE-EARTH ELEMENTS ON THERMAL STABILITY OF PdSi_(16.5) GLASS

NING Yuantao;LI Yongnian Kunming Institute of Precious Metals

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NING Yuantao;LI Yongnian Kunming Institute of Precious Metals. INFLUENCE OF RARE-EARTH ELEMENTS ON THERMAL STABILITY OF PdSi_(16.5) GLASS. Acta Metall Sin, 1989, 25(4): 126-131.

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Abstract The influence of rare-earth elements, La, Ce, Pr, Nd, Sm, Eu, Gd,Dy, Ho, Br and Yb on the thermal stabitity of PdSi_(16.5) glass wae studied systemati-cally by means of DSC. All rare-earth elements, especially heavy ones, increase ob-viously the thermal stability parameters, including T_A (T_g,T_x,T_p), T_(rg) and ΔE etc.The crystallization temperature T_(p1) and T_(p2) increase linearly with the lanthanideconstriction increasing, but Eu shows an anomalous influence: Pd-Si-Eu metallicglass possesses the highest thermal stability and the lowest concentration range ofglass forming among Pd-Si-R glasses

Key words: thermal stability amorphous alloy Pd-Si alloy rare-earth elements

Received: 18 April 1989

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