| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
Thermodynamic Modelling Possibilities of High-persistent (Thermally, Mechanically, Chemically) Functional Materials |
| Author(s) |
Alexander Arsenievich Slobodov, Andrey Evdokimov, Sergey Bogdanov, Roman Efimov, Aiman Baibulanova |
| On-Site Speaker (Planned) |
Alexander Arsenievich Slobodov |
| Abstract Scope |
On the basis of thermodynamic modeling and databases the calculation of phase-chemical transformations occurring in the system МgO - C - Al – H2O – air at 298 - 2400 K is carried out. It describes processes occurring in thicker and cells of corresponding refractory with antioxidant on the basis of aluminium and without one. The results allow revealing stability fields for main components composing the composite. In addition, process of evolution for gas phase composition depending on temperature is investigated, and the efficiency of the antioxidizing addition (suppressing ability of gas phase to oxidize carbon) is quantitatively investigated. The developed methodology has allowed also to investigate and reveal mechanisms of phase-chemical transformations occurring at sialons SixAlyOzNt synthesis by means of carbothermy kaoline nitration, and complex carbonitride of titanum, tantalum, and tungsten - the system TiC - TiN - TaC - TaN – WC at 298 - 3000 K. |