Eutectic system
Mixture with a lower melting point than its constituents
Eutectic system
A eutectic system or eutectic mixture ( yoo-TEK-tik) is a type of a homogeneous mixture that has a melting point lower than those of the constituents. The lowest possible melting point over all of the mixing ratios of the constituents is called the eutectic temperature. On a phase diagram, the eutectic temperature is seen as the eutectic point (see plot). Non-eutectic mixture ratios have different melting temperatures for their different constituents, since one component's lattice will melt at a lower temperature than the other's. Conversely, as a non-eutectic mixture cools down, each of its components solidifies into a lattice at a different temperature, until the entire mass is solid. A non-eutectic mixture thus does not have a single melting/freezing point temperature at which it changes phase, but rather a temperature at which it changes between liquid and slush (known as the liquidus) and a lower temperature at which it changes between slush and solid (the solidus). In the real world...
Read on Wikipedia · Image Eutektikum_new.svg: *Eutektikum.gif: Dr. Báder Imre derivative work: Michbich (talk) derivative work: Wizard191 (talk), CC BY-SA 3.0
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