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New criterion in predicting glass forming ability of various glass-forming systems
Alternative TitleNew criterion in predicting glass forming ability of various glass-forming systems
Du X H1; Huang J C1
2008
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume17Issue:1Pages:249-254
AbstractIt 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.
Other AbstractIt 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.
KeywordBULK METALLIC GLASSES SUPERHEATED MELTS THERMAL-STABILITY AMORPHOUS-ALLOYS COOLING RATE PARAMETERS FRAGILITY LIQUIDS CU glass-forming systems glass forming ability criterion
Indexed ByCSCD
Language英语
CSCD IDCSCD:3251075
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148999
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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