V2EX binodal

Binodal

Definition / 定义

binodal(双节线;相共存曲线):相图中把单相区两相共存区分开的边界曲线,表示在给定条件下两相开始/停止共存的组成或状态范围(常见于溶液、聚合物共混物、流体混合物的相分离研究)。注:相关但不同的概念还有 spinodal(自旋分解线)

Pronunciation / 发音(IPA)

/banodl/

Examples / 例句

The binodal separates the one-phase region from the two-phase region.
双节线把单相区与两相区分开。

In a temperaturecomposition phase diagram, the binodal curve encloses the miscibility gap, and its endpoints approach the critical point as conditions change.
在温度组成相图中,双节线围成不互溶区;随着条件变化,其端点会趋近临界点。

Etymology / 词源

来自前缀 bi-(“二、双”)+ nodal(“结点的”)。在相图语境中,“binodal”指与“两相共存边界上的两个结点/端点”相关的曲线,因此常译作双节线共存曲线

Related Words / 相关词

Literary Works / 文献与著作中的用例

  • J. M. Prausnitz, R. N. Lichtenthaler, E. G. de Azevedo, Molecular Thermodynamics of Fluid-Phase Equilibria(流体相平衡热力学教材中常用“binodal curve”讨论相共存边界)
  • P. J. Flory, Principles of Polymer Chemistry(聚合物溶液与相分离章节常涉及binodal/共存曲线)
  • M. Rubinstein & R. H. Colby, Polymer Physics(聚合物相行为与相图部分会用binodal与spinodal对比说明)
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