About the MOBMO2: TCS Mo-based Alloys Mobility Database

Molybdenum-based alloys are used in various applications due to their excellent mechanical, thermal, and corrosion-resistant properties. They are commonly used in aerospace components, electrical contacts, industrial machinery, and high-temperature furnace parts. Additionally, they are used in the production of high-strength steel alloys, which are crucial in construction and automotive industries for their durability and resistance to corrosion and heat.

The TCS Mo-based Alloys Mobility Database (MOBMO) is a kinetic database containing atomic mobility data for Mo-based refractory alloys. The database is compatible and primarily recommended for use with the most recent version of the TCS Mo-based Alloys Database (TCMO) (i.e. TCMO2).

The Mo-based alloys thermodynamic and kinetic databases (i.e. TCMO2 and MOBMO2) are available for refractory (e.g. Mo-base) superalloys that function at higher temperatures than the Ni-base superalloys. The Mo databases include the silicide and borosilicide phases to form SiO₂-based scales, which is to overcome the challenge of poor oxidation resistance that happens with these alloys that contain MoO₃.

The MOBMO2 database provides kinetic data for those working with the Add-on Modules—the Diffusion Module (DICTRA) and the Precipitation Module (TC-PRISMA). It can also be used together with the Thermo‑Calc Software Development Kits (SDKs).

When the kinetic database is used with the Diffusion Module (DICTRA), and a thermodynamic database for Mo-based alloys (e.g. TCMO2) you can study diffusion-controlled phenomena in Mo/substrate systems, such as solidification, growth of interfacial compounds, dissolution of substrates, interdiffusion, and much more. Similarly, when used with the Precipitation Module (TC-PRISMA), it is suitable to simulate concurrent nucleation, growth, and coarsening of precipitates in Mo alloys.

MOBMO: TCS Mo-based Alloys Mobility Database Revision History. The current version of the database is MOBMO2. See the link for any subversion release details.

The CALPHAD Method

The Thermo‑Calc databases are developed with the CALPHAD approach based on various types of experimental data and theoretical values (e.g. those from first-principles calculations). It is based on the critical evaluation of binary, ternary, and for some databases, important higher order systems. This enables predictions to be made for multicomponent systems and alloys of industrial importance. Among these, the thermodynamic database is of fundamental importance.

The CALPHAD Method and the Thermo‑Calc Databases. Also visit the video tutorials on our website or our YouTube playlist.

Additional Resources

Go to the Molybdenum-based Alloys Databases page on our website where you can access this Technical Information plus learn more about the compatible thermodynamic database and its Validation and Calculation Examples Collection.