New criterion in predicting glass forming ability of various glass-forming systems

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	New criterion in predicting glass forming ability of various glass-forming systems
其他题名	New criterion in predicting glass forming ability of various glass-forming systems
	Du X H 1; Huang J C 1
	2008
发表期刊	CHINESE PHYSICS B
ISSN	1674-1056
卷号	17 期号:1 页码:249-254
摘要	It has been confirmed that glass-forming ability (GFA) of supercooled liquids is related to not only liquid phase stability but also the crystallization resistance. In this paper, it is found that the liquid region interval (T(i) - T(g)) characterized by the normalized parameter of T(g)/T(1) could reflect the stability of glass-forming liquids at the equilibrium state, whilst the normalization of supercooled liquid region Delta T(x)-(T(x)-T(g)), i.e. Delta T(x)/T(x) (wherein T(1) is the liquidus temperature, T(g) the glass transition temperature, and T(x) the onset crystallization temperature) could indicate the crystallization resistance during glass formation. Thus, a new parameter, defined as xi - T(g)/T(1)+Delta T(x)/T(x) is established to predict the GFA of supercooled liquids. In comparison with other commonly used criteria, this parameter demonstrates a better statistical correlation with the GFA for various glass-forming systems including metallic glasses, oxide glasses and cryoprotectants.
其他摘要	It has been confirmed that glass-forming ability (GFA) of supercooled liquids is related to not only liquid phase stability but also the crystallization resistance. In this paper, it is found that the liquid region interval (Tl – T_g) characterized by the normalized parameter of T_g/Tl could reflect the stability of glass-forming liquids at the equilibrium state, whilst the normalization of supercooled liquid region ΔT_x=(T_x – T_g), i.e. ΔT_x/T_x (wherein Tl is the liquidus temperature, T_g the glass transition temperature, and T_x the onset crystallization temperature) could indicate the crystallization resistance during glass formation. Thus, a new parameter, defined as ξ = T_g/Tl+ΔT_x/T_x is established to predict the GFA of supercooled liquids. In comparison with other commonly used criteria, this parameter demonstrates a better statistical correlation with the GFA for various glass-forming systems including metallic glasses, oxide glasses and cryoprotectants.
关键词	BULK METALLIC GLASSES SUPERHEATED MELTS THERMAL-STABILITY AMORPHOUS-ALLOYS COOLING RATE PARAMETERS FRAGILITY LIQUIDS CU glass-forming systems glass forming ability criterion
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3251075
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/148999
专题	中国科学院金属研究所
作者单位	1.Natl Sun Yat Sen Univ, Institute Mat Sci & Engn, Ctr Nanosci & Nanotechnol, Kaohsiung 804, Taiwan 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Du X H,Huang J C. New criterion in predicting glass forming ability of various glass-forming systems[J]. CHINESE PHYSICS B,2008,17(1):249-254.
APA	Du X H,&Huang J C.(2008).New criterion in predicting glass forming ability of various glass-forming systems.CHINESE PHYSICS B,17(1),249-254.
MLA	Du X H,et al."New criterion in predicting glass forming ability of various glass-forming systems".CHINESE PHYSICS B 17.1(2008):249-254.