A degenerate eutectic system goldsilicon

The Au-Si eutectic phase diagram is characterized by negligible solubility of A(gold) in B and of B (silicon) in A. The single-phase a and P regions in Fig. 8.10 disappear and points j and l are displaced to their respective temperature axes. Fig. 8.11 shows the gold-silicon phase diagram, which is a prototypical degenerate eutectic system. As shown in the following example, information regarding the nonideality of the liquid phase can be garnered from analysis of the liquidus lines in the phase diagram.

Example: Calculate the activity coefficients of the two components in the liquid phase along the two liquidus curves in Fig. 8.11. Is regular solution theory obeyed? Show that the data are consistent with the Zeroth Law of thermodynamics.
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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