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Synthesis and Properties of Bulk Metallic Glasses in Pd-Ni-P and Pd-Cu-P Alloys

Published online by Cambridge University Press:  10 February 2011

Y. He  and
R. B. Schwarz
Y. He
Affiliation:
Center for Materials Science, MS K-765, Los Alamos National Laboratory, Los Alamos, NM, 87545, U. S. A.
R. B. Schwarz
Affiliation:
Center for Materials Science, MS K-765, Los Alamos National Laboratory, Los Alamos, NM, 87545, U. S. A.
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Abstract

Bulk amorphous Pd-Ni-P and Pd-Cu-P alloy rods with diameters ranging from 7 to 25 mm have been synthesized over a wide composition range using a fluxing technique. For most bulk amorphous Pd-Ni-P alloys, the difference ΔT = Tx - Tg between the crystallization temperature Tx and the glass transition temperature Tg is larger than 90 K, while for bulk amorphous Pd-Cu-P alloys, ΔT varies from 27 to 73 K. Pd40Ni40P20 has the highest glass formability, and 300-gram bulk amorphous cylinders, 25 mm in diameter and 50 mm in length, can be easily produced. This size, however, is not an upper limit. The paper presents the glass formation ranges for both ternary alloy systems and data on the thermal stability of the amorphous alloys, as well as their specific heat, density, and elastic properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 455: Symposium T – Glasses and Glass Formers–Current Issues , 1996 , 495
Copyright
Copyright © Materials Research Society 1997

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