Eutectic point

  1. What is eutectic point?
  2. jcsd
  3. Actually I read that but couldnt understand what was written that's why I posted here
  4. Astronuc

    Staff: Mentor

    chound, what is not clear in the wikipedia article.

    The key point is:
    In the two phase diagram given, the eutectic is found at the "V" of the liquid phase, where the vertex touches the horizontal line. The horizontal line represents a constant temperature, and the vertex represents a specific composition. The eutectic represents the point where that composition goes 'directly' from solid to liquid, i.e. without partially melting to a solid-liquid combination.

    The example of the steel (Fe - C) system is perhaps better.
    This figure shows the eutectic and eutectoid.

    Then there is a three-phse reactions diagram below that: ,
    which should be more clear.

    Here is another site which discusses binary phase diagrams.
    Last edited: Jun 12, 2006
  5. Gokul43201

    Gokul43201 11,044
    Staff Emeritus
    Science Advisor
    Gold Member

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