# Ternary Phase Diagrams

Printable examples of ternary phase diagrams  to help you learn about ternary phase diagram. First of all, you should know what ternary diagram is. It is a triangular diagram which displays the proportion of three variables that sum to a constant and which does so using barycentric coordinates. It graphically depicts the ratios of the three variables as positions in an equilateral triangle. Follow the following examples then study the explanation!

image via brocku.ca

The ternary phase diagram above shows you the composition of ternary diagrams. The advantage of using a ternary plot for depicting chemical compositions is that three variables can be conveniently plotted in a two-dimensional graph. Ternary plots can also be used to create phase diagrams by outlining the composition regions on the plot where different phases exist. Every point on a ternary plot represents a different composition of the three components. A parallel to a side of the triangle is the locus of points representing systems with constant chemical composition in the component situated in the vertex opposed to the side.

image via brocku.ca

image via d32ogoqmya1dw8.cloudfront.net

All compositions on ternary diagrams are expressed in terms of the three end member components which define the system. These three components are located a the apices of the triangle. Each apex on the triangle representing the ternary system represents 100% of the component at that apex. The side of the triangle, directly opposite the apex, represents 0% of the apex component. Compositions of points which lie along the outside edge of the triangle are simply a mixture of the two components at each end of the tie line, with 0% of the third component.