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Three component phase diagramIn a three component phase diagram, the proportions of the three variables A, B, and C must (normally) sum to 100% or 1.0. If we know A and B we can calculate C : 100%-A-B=C (or 1-A-B=C). Because the three proportions cannot vary independently - it is possible to graph the intersection of all three variables in a two dimensional manner (two degrees of freedom).
Three component phase diagram
Three component phase diagram (above):
Blue area (center): A = 20% , B = 10% and C = 70% --> A + B + C = 100%
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