Mixed phase

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In thermodynamics, a mixed phase is a homogeneous phase that consists of two or more substances . Gaseous mixed phases are usually referred to as gas mixtures, liquid mixed phases as solutions and solid mixed phases as solid solutions or mixed crystals .

The proportions of the individual components of a mixed phase can be specified  as partial quantities with the aid of the molar proportion x . The temperature and pressure behavior of mixed phases is therefore shown in Tpx phase diagrams. These diagrams are multi-dimensional for several substances and are then often shown in a simplified manner, e.g. B. in ternary systems as a triangle diagram .

The thermodynamic conditions of the change system in a way that the mixing phase to a mixing gap occurs within the phase diagram, so there is a separation , which, especially in minerals and a metastable may state the result.

Individual evidence

  1. ^ Ernst Brunhuber, Stephan Hasse: Giesserei-Lexikon . Fachverlag Schiele & Schoen, 2001, ISBN 3-7949-0655-1 , p. 868 ( limited preview in Google Book search).
  2. Uwe Hillebrand: Stoichiometry: an introduction to the basics with examples and ... Springer DE, 2009, ISBN 978-3-642-00460-5 , p. 87 ( limited preview in Google Book search).
  3. ^ HD Baehr, Stephan Kabelac: Thermodynamics . 2006, ISBN 3-540-32514-X , pp. 236 ff . ( limited preview in Google Book search).
  4. Klaus Lucas: Thermodynamics . Springer DE, 2007, ISBN 978-3-540-29333-0 , pp. 76 f . ( limited preview in Google Book search).
  5. Peter R. Sahm, Ivan Egry, Thomas Volkmann: Melt, solidification, interfaces: An introduction to physics and ... Springer DE, 2001, ISBN 3-642-58523-X , p. 83 ff . ( limited preview in Google Book search).
  6. Erhard Hornbogen, Gunther Eggeler, Ewald Werner: Materials: Structure And Properties Of Ceramic, Metal, Polymer And ... Springer DE, 2012, ISBN 978-3-642-22561-1 , p. 108 ( limited preview in Google Book search).