About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Chemistry and Physics of Interfaces
|
Presentation Title |
J-15: Frictional Molecular Dynamics Simulations of the TiO2/SiO2 Passive Films Toward the Improvement of Oxidation Resistance of MoSiBTiC Alloy |
Author(s) |
Keaki Watanabe, Shogo Fukushima, Yixin Su, Yuta Asano, Yusuke Ootani, Nobuki Ozawa, Momoji Kubo |
On-Site Speaker (Planned) |
Keaki Watanabe |
Abstract Scope |
Improving the heat efficiency in energy plants is vital for energy saving and environmental protection. Since the efficiency of the gas turbine increases with increasing inlet temperature, it is essential to develop a new heat-resistant material that overwhelms Ni-based alloys that are currently used. MoSiBTiC alloys have attracted attention because of their excellent properties including high density, high heat strength, and high fracture toughness. However, MoSiBTiC alloys are less oxidation resistance at high temperatures, and it causes weight reduction due to the sublimation of MoS2. It is known that the passive films consisting of crystalline TiO2 and amorphous SiO2 suppress the sublimation of MoS2. Therefore, understanding the formation processes of passive films and their mechanical properties is essential for the development of a MoSiBTiC alloy with oxidation resistance. Here, we analyzed the frictional property of the TiO2/SiO2 composite in a high-temperature environment using reactive molecular dynamics simulations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, High-Temperature Materials, Thin Films and Interfaces |