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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Material properties (thermodynamics) ： ウィキペディア英語版 Material properties (thermodynamics) The thermodynamic properties of materials are intensive thermodynamic parameters which are specific to a given material. Each is directly related to a second order differential of a thermodynamic potential. Examples for a simple 1-component system are: * Compressibility (or its inverse, the bulk modulus) : * Isothermal compressibility ::$\backslash beta\_T=-\backslash frac\backslash left(\backslash frac\backslash right)\_T$ \quad = -\frac\,\frac : * Adiabatic compressibility ::$\backslash beta\_S=-\backslash frac\backslash left(\backslash frac\backslash right)\_S$ \quad = -\frac\,\frac * Specific heat (Note - the extensive analog is the heat capacity) : * Specific heat at constant pressure ::$c\_P=\backslash frac\backslash left(\backslash frac\backslash right)\_P$ \quad = -\frac\,\frac : * Specific heat at constant volume ::$c\_V=\backslash frac\backslash left(\backslash frac\backslash right)\_V$ \quad = -\frac\,\frac * Coefficient of thermal expansion ::$\backslash alpha=\backslash frac\backslash left(\backslash frac\backslash right)\_P$ \quad = \frac\,\frac where ''P''  is pressure, ''V''  is volume, ''T''  is temperature, ''S''  is entropy, and ''N''  is the number of particles. For a single component system, only three second derivatives are needed in order to derive all others, and so only three material properties are needed to derive all others. For a single component system, the "standard" three parameters are the isothermal compressibility $\backslash beta\_T$, the specific heat at constant pressure $c\_P$, and the coefficient of thermal expansion $\backslash alpha$. For example, the following equations are true: :$c\_P=c\_V+\backslash frac$ :$\backslash beta\_T=\backslash beta\_S+\backslash frac$ The three "standard" properties are in fact the three possible second derivatives of the Gibbs free energy with respect to temperature and pressure. ==Sources== The Dortmund Data Bank is a factual data bank for thermodynamic and thermophysical data. See thermodynamic databases for pure substances. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Material properties (thermodynamics)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.