New criterion in predicting glass forming ability of various glass-forming systems
查看参考文献45篇
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文摘
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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. |
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来源
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Chinese Physics. B
,2008,17(1):249-254 【核心库】
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DOI
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10.1088/1674-1056/17/1/043
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关键词
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glass-forming systems
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glass forming ability
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criterion
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地址
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Institute of Materials Science and Engineering, Center for Nanoscience and Nanotechnology, National Sun Yat–Sen University, Taiwan, Kaohsiung
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语种
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英文 |
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ISSN
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1674-1056 |
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学科
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物理学 |
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基金
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National Science Council,Taiwank,China(Grant No NSC 94-2216-E-110-010)
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post-doc sponsorship from National Science Council ,Taiwan,China(Grant No NSC 95-2816-E-110-001).
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文献收藏号
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CSCD:3251075
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参考文献 共
45
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