Chesta - Software for Creating Chemical Potential Diagrams
Table of Contents
Features of Chesta
What Chesta can do
- Create chemical potential diagrams for multi-component systems: 2D (with 2 axes) and 3D (with 3 axes) diagrams can be created. Chemical systems with more than 3 components can also be handled. (Cutting and projection features are provided to reduce the dimension of the diagrams.)
- Customize diagrams: Several types of axes such as activity, energy, electrical potential, and temperature are available. This enables creation of Ellingham diagrams and Pourbaix (Potential-pH, E-pH) diagrams. Also, temperature and the activity of each phase can be changed and applied in the diagrams instantly.
- Output images (in BMP, JPG, and EMF formats): Vector images (EMF) can be edited in other softwares without degradation.
- Output coordinates of equilibrium points and activities of chemical species: Chesta can be utilized as a tool for equilibrium calculations.
Features not implemented
- Thermodynamic database is not included: You have to collect data from the literature and input them to data files.
- Compositional ranges of substances cannot be considered: All compounds are treated as line compounds.
System requirements
Microsoft Windows 7 or later (64 bit)
Downloads
Chesta 3.4.3 (Latest version)
Chesta 3.4.3.2.zip (Released on Jun. 9, 2023.)
An Excel macro for creating data files is included.
Chesta 2.22 (Discontinued)
Chesta 2.22.zip (Built on Jun. 15, 2008. Released on June 21, 2010.)
Feature comparison
| Chesta 2.22 | Chesta 3.4.3 | |
| Languages | Japanese | English / Japanese |
| 2D diagrams | x | x |
| 3D diagrams | x | x |
| 3D diagrams with a projection axis | - | x |
| Cutting diagrams by fixing an axis value | x | x |
| Cutting diagrams with an arbitrary plane | - | x |
| Activity axis | x | x |
| Electric potential axis (Unit: V) | x | x |
| Energy axis (Unit: kJ, eV) | - | x |
| Temperature axis (Unit: K, 1/K) | - | x |
| Composition - Gibbs energy diagrams | x | - |
| Visual settings for individual chemical species | - | x |
| Batch saving of images | x | - |
| Rotation of diagrams by dragging | - | x |
| Equilibrium point list | x | x |
| Activity list at equilibrium points | - | x |
Screenshots
Examples
Predominance diagrams of the Fe-O2-Cl2 system
Chemical potential diagrams for neutral chemical species with chemical potential and temeprature axes. Units used: bar, kJ, K.
Pourbaix (Potential-pH, E-pH) diagrams of the Ag-Cl-H2O system
Chemical potential diagrams for aqueous systems containing ionic species. (Data file)
Author
Naoyuki Hatada, Ph.D.
- Department of Materials Science and Engineering, Kyoto University
- hatada.naoyuki.8u@kyoto-u.ac.jp
License
You can use Chesta free of charge for both commercial and non-commercial porposes. Please refer to the license document accompanying Chesta for detailed terms and conditions.
Cite Chesta
Naoyuki Hatada, Chesta - Software for Creating Chemical Potential Diagrams, https://n-hatada.github.io/chesta, accessed Month Date, Year.
History
- June 21, 2010: Chesta 2.22 released.
- April 7, 2014: Chesta 3.2.6.9 released.
- June 3, 2014: Examples updated.
- August 9, 2022: Website moved; Chesta 3.4.1.15 released. The activities of all chemical species at equilibrium points can now be displayed.
- August 18, 2022: Chesta 3.4.1.16 released.
- August 22, 2022: Chesta 3.4.2.0 released. A bug (error occurs when 0 K data are entered) has been fixed.
- September 14, 2022: Chesta 3.4.2.1 released. Data files that contain whitespace characters before or after strings or numbers can now be correctly interpreted, ignoring the whitespace characters.
- May 15, 2023: Chesta 3.4.3.0 released. A bug related to the drawing of frames of stability areas has been fixed.
- June 9, 2023: Chesta 3.4.3.2 released. Minor bugs related to translation have been fixed.