Understanding Phase Diagrams

Understanding Phase Diagrams

In this course, we explore the world of phase diagrams and see why they are such useful tools. We cover a wide variety of topics including:

1. Fundamental theory applicable to all phase diagrams

   
   

2. Unary Phase Diagrams:

   We look at the Clausius-Clapeyron equations and learn how to apply these equations to real life problems. We also look at examples of unary phase diagrams and see how they can help us.

   
   

3. Binary Phase Diagrams:

   In the section on binary phase diagrams, we first take a look at some of the theory specific to binary phase diagrams, such as:

   Binary compounds

   Invariant Reactions

   Isothermal/Heterothermal melting

   Crystallization sequences and lever rule calculations

   
   

4. Fe-Fe3C Phase diagram

   We also take a look at on of the most common phase diagrams. We analyze this phase diagram in terms of the theory we learnt in the precious section and also use this phase diagram to answer some relevant questions.

   
   

5. Binary phase diagram with a gas phase

   In this section, we look at a special case of binary phase diagrams. One which is associated with a gas phase. We analyze this phase diagram, and see how the Gibbs phase rule changes with regards to the analysis of this system. We also look at crystallization sequences under conditions of constant composition and constant pressure of the gas phase.

   
   

6. Ternary Phase Diagrams:

   In the final section, we first go through theory that is relevant to ternary phase diagrams, including:

   Invariant Reactions

   Isothermal/Heterothermal melting

   Identifying Binary and Ternary compounds and whether they melt isothermally or heterothermally

   Alkemade triangles and the Alkemade theorem

   Liquidus Plots (incl. liquid immiscibility)

   Crystallization sequences (incl. alteration and liquid immiscibility)

      We then take a look at an industrially relevant example considering the concept of slag saturation.

The Complete Guide to Unary, Binary and Ternary Phase Diagrams

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What you will learn

• Understand Unary phase diagrams and how to analyze them. The application of Gibbs phase rule and the Clasius-Clapeyron equations for Unary systems
• Understand the basic jargon and concepts regarding binary phase diagrams. Understand the application of the lever rule, the Gibbs phase rule.
• Understanding the concepts governing ternary phase diagrams. Being able to decipher phase relations in ternary systems. Being able to apply the triangle rule

Rating: 4

Level: Intermediate Level

Duration: 4 hours

Instructor: Yathil Matabadal