Pd--Si Binary Bulk Metallic Glass Prepared at Low Cooling Rate

Chin. Phys. Lett.

2005, Vol. 22

Issue (6): 1481-1483 DOI:

Original Articles

Pd--Si Binary Bulk Metallic Glass Prepared at Low Cooling Rate

YAO Ke-Fu; RUAN Fang

Division of Engineering Materials, Department of Mechanical Engineering, Tsinghua University, Beijing 100084

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YAO Ke-Fu, RUAN Fang 2005 Chin. Phys. Lett. 22 1481-1483

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Abstract We report that binary bulk metallic glasses can be made up to 6mm in diameter in a Pd--Si alloy system by air cooling at slow cooling rate (about 8K/s). The high stability of the undercooled liquid and the large glass-forming ability (GFA) of the binary alloy are contributed to the removing of heterogeneous impurities in the alloy melt by employing the fluxing technique. It has been found that decreasing cooling rate can increase the supercooled liquid region and thermal stability of the glassy alloy. After fluxing, a wider supercooled liquid region (ΔT=58K) and higher glass-forming ability have been obtained in a Pd₈₁Si₁₉ binary glassy alloy prepared by slow cooling rate.

Keywords: 61.43.Dq 81.05.Kf 64.70.Kb

Published: 01 June 2005

PACS:	61.43.Dq	(Amorphous semiconductors, metals, and alloys)
	81.05.Kf	(Glasses (including metallic glasses))
	64.70.Kb

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I6/01481

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