Kinetics of Glass Transition of Zr41Ti14Cu12.5Ni10Be22.5 AlloySolidified in a Drop Tube

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1148-1151 DOI:

Original Articles

Kinetics of Glass Transition of Zr₄₁Ti₁₄Cu_12.5Ni₁₀Be_22.5 AlloySolidified in a Drop Tube

LI Gong^1,2;SUN Li-Ling^2,3;LIU Ri-Ping¹;JING Qin¹;ZHANG Jun²;Li Qiang¹;WANG Wen-Kui^1,2

¹College of Material Sciences and Chemical Engineering, Yanshan University, Qinhuangdao 066004 ²Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 ³National Microgravity Laboratory, Chinese Academy of Sciences, Beijing 100080

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LI Gong, SUN Li-Ling, LIU Ri-Ping et al 2002 Chin. Phys. Lett. 19 1148-1151

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Abstract Droplets of Zr₄₁Ti₁₄Cu_12.5Ni₁₀Be_22.5 glass-forming alloy with different sizes are solidified in a drop tube containerless process. The glass transition temperature T_g of Zr₄₁Ti₁₄Cu_12.5Ni₁₀Be_22.5 glassy spheres solidified with different cooling rates is investigated by using a differential scanning calorimeter. It was found that all the amorphous spheres show an increase of T_g with the heating rate. The glassy spheres have a unique value for glass transition activation energy E_g= 435.50kJ/mol, which is independent of cooling rate q. The insensitivity of T_g to q is interpreted by an extension of the free volume model for flow.

Keywords: 61.43.Dq 61.85.Ks 66.30.Fq

Published: 01 August 2002

PACS:	61.43.Dq	(Amorphous semiconductors, metals, and alloys)
	61.85.Ks
	66.30.Fq	(Self-diffusion in metals, semimetals, and alloys)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01148

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	LI Gong
	SUN Li-Ling
	LIU Ri-Ping
	JING Qin
	ZHANG Jun
	Li Qiang
	WANG Wen-Kui

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