Unary_Phase_Diagrams_F10

Unary_Phase_Diagrams_F10 - degrees of freedom 4 H 2 O...

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1 Unary and Binary Phase Diagrams GLY 4200 Fall, 2010
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2 Unary Diagrams Unary diagrams have a single component We therefore usually choose to plot both P (pressure) and T (temperature) since composition is not a variable Examples Water Silica Carbon
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3 Phase Rule for Unary Systems f = c - p + 2 = 1- p + 2 = 3 - p If one phase is present, there are two degrees of freedom (both T and P) If two phases are present, there is one degree of freedom (either T or P) If three phases are present, there are no
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Unformatted text preview: degrees of freedom 4 H 2 O Diagram 5 Terminology 6 Water ice 7 Silica Phase Diagram 8 Snowflake Obsidian • The white patches are crystals of cristobolite, formed at high temperature • The magma-crystal mix then erupted, chilling the magma and forming a volcanic glass matrix around the metastable cristobolite, which cooled too quickly to revert to tridymite 9 Carbon Phase Diagram Climate Change Application • Greenhouse Warming on Terrestrial Planets 10...
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Unary_Phase_Diagrams_F10 - degrees of freedom 4 H 2 O...

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