Heatup behavior

The solid-to-liquid transformation in the eutectic system is more complex than the melting process in the ideal-solution phase diagram discussed in connection with Fig. 8.3. In Fig. 8.10, suppose the system starts at temperature T1 with a mole fraction B a bit greater than the terminal solubility at o. The initial state is in the a+P two-phase region. Upon increasing the temperature holding the overall composition constant, the P phase disappears when the terminal solubility curve is reached at point m. Further temperature increase moves the system through the single-phase a region without phase changes until point e is reached. Here the first liquid with composition at point f appears. Additional heatup moves the system through the two-phase a+L region, with the composition of the a phase decreasing from e to c and the liquid phase composition moving from f to d.

Complete liquefaction occurs when the liquidus adfk is reached. For a two-phase mixture with overall B mole fraction corresponding to point k, heatup from Ti would result in complete melting at the eutectic temperature T3.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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