Material properties (thermodynamics)
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The thermodynamic properties of materials are intensive thermodynamic parameters which are specific to a given material. Examples for a simple 1-component system are:
- Compressibility (or its inverse, the bulk modulus)
- Isothermal compressibility
- <math>\beta_T=-\frac{1}{V}\left(\frac{\partial V}{\partial P}\right)_T</math>
- Adiabatic compressibility
- <math>\beta_S=-\frac{1}{V}\left(\frac{\partial V}{\partial P}\right)_S</math>
- Specific heat (Note - the extensive analog is the heat capacity)
- Specific heat at constant pressure
- <math>c_P=\frac{T}{N}\left(\frac{\partial S}{\partial T}\right)_P</math>
- Specific heat at constant volume
- <math>c_V=\frac{T}{N}\left(\frac{\partial S}{\partial T}\right)_V</math>
- Coefficient of thermal expansion
- <math>\alpha=\frac{1}{V}\left(\frac{\partial V}{\partial T}\right)_P</math>
where P is pressure, V is volume, T is temperature, S is entropy, and N is the number of particles.
Only three material parameters are needed to determine the others. For example, the following equations are true:
- <math>c_P=c_V+\frac{TV\alpha^2}{N\beta_T}</math>
- <math>\beta_T=\beta_S+\frac{TV\alpha^2}{Nc_P}</math>
[edit] References
Callen, Herbert B. (1985). Thermodynamics and an Introduction to Thermostatistics, 2nd Ed., New York: John Wiley & Sons. ISBN 0-471-86256-8.


