About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Tackling Structural Materials Challenges for Advanced Nuclear Reactors
|
Presentation Title |
Radiation Resistance of MAX and MAB Phase Materials |
Author(s) |
Izabela A. Szlufarska, Jianqi Xi, Jun Young Kim, Hongliang Zhang |
On-Site Speaker (Planned) |
Izabela A. Szlufarska |
Abstract Scope |
MAX phase materials are 3D layered ceramics that have been shown an unprecedented tolerance to radiation-induced amorphization. However, unfortunately, MAX phases undergo radiation-induced crystalline-to-crystalline phase transformation, which compromises the many advantageous properties of these materials. In this talk, I will discuss how radiation resistance of Ti3SiC2 can be enhanced by engineering multi-layer systems with SiC and TiCx interfaces. I will show that unlike in metals, in ceramics interfaces are not necessarily beneficial to radiation resistance and that it is important to understand details of the defect energy landscape at and near ceramic interfaces. In addition, I will present our findings on radiation resistance of 3D layered borides (MAB phases) relative to MAX phases, I will discuss the role of a 2D Al layer in radiation resistance of the MAB phases, and finally I will introduce design rules we identified for design of MAB phases with enhanced radiation resistance. |