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Researchers have created tens of thousands of phase equilibria diagrams since James Thomson (brother of Lord Kelvin) constructed a plaster pressure-volume-temperature 3-d model based on data for carbon dioxide collected by Thomas Andrews. James Maxwell made his better known thermodynamic surface sculpture in 1874, based on the graphical thermodynamics papers of Josiah Gibbs.
With so many diagrams in the scientific record, how can modern ceramic and glass researchers find the appropriate phase equilibria diagrams for their own work?
- Look up all the papers throughout history on the specific ceramic or glass system and read thoroughly. OR
- Consult the ACerS-NIST Phase Equilibria Diagram database where each Figure contains commentary on the diagram(s) for a specific material system.
The questions and answers below provide examples of the deep content and analytical benefits of the ACerS-NIST Phase Equilibria Diagram product. Click on the links on the sidebar to the right for introductory information and to purchase your PHASE product.
Question: Which diagram of the alumina-titania-zirconia liquidus surface should I use?
Question: How can the three diagrams above be properly compared? Two are in mol % and one is in weight %.
Question: What is the composition (mol %) at the 1730° max point?
Question: How can these two graphs of the alumina-titania-zirconia isothermal diagram at 1622±2° be compared? The one on the right is nothing like all the other graphs.
