| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
J-6: Determination of the Activation Energy of the Formation of Intermetallic Compounds in the Ni-Al and Ti-Al System during Thermochemical Pressing |
| Author(s) |
Borys Sereda, Yuriy Belokon, Irina Kruhliak, Dmytro Sereda |
| On-Site Speaker (Planned) |
Borys Sereda |
| Abstract Scope |
Two methods for determining the activation energy of the intermetallic formation reaction are considered: a theoretical calculation method based on the results of thermodynamic analysis of SHS reactions, and an experimental method based on the study of the kinetics of intermetallic phase formation. As a result of thermodynamic calculations, it was found that the activation energies for Ni-Al and Ti-Al systems are ~ 45 kJ/mol and ~ 82 kJ/mol, respectively. Based on the experimental method of studying the kinetics of the interaction of intermetallic alloys under thermochemical pressing conditions, analytical equations of temperature-time dependences of intermetallic formation in Ni-Al and Ti-Al systems and their activation energies are obtained. It is established that experimental studies confirm the theoretical calculations (relative error does not exceed 5%). |