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.

Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

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