| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
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| Symposium
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Emergent Materials under Extremes and Decisive In Situ Characterizations
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| Presentation Title |
In-situ Two-dimensional X-ray Diffraction (XRD2) Studies On High-temperature Phase Transformations of 2D Titanium Carbide (Ti3C2Tx) MXene |
| Author(s) |
Brian Cecil Wyatt, Srinivasa Kartik Nemani, Bowen Zhang, Babak Anasori |
| On-Site Speaker (Planned) |
Srinivasa Kartik Nemani |
| Abstract Scope |
2D transition metal carbides/nitrides (MXenes) have gained more interest recently as additive materials for ultra-high temperature composite applications. However, there is a gap in fundamental understanding of MXenes’ phase stability in low oxygen high-temperature environments. In this study, we thoroughly explored the phase stability of Ti3C2Tx between 600 - 1000 ᵒC through the use of in-situ hot-stage x-ray diffraction studies equipped with a 2D detector (XRD2) under an Ar environment. Using these methods, we were able to gain fundamental understanding of Ti3C2Tx’s phase stability and characterize their structural transformations. We found that MXene films annealed at high temperatures transform to lamellar nano and micron-sized cubic grains of Ti2C and TiCy with ordered carbon vacancies with a strong morphological correlation to their synthesis protocol. This fundamental in-situ study of MXenes’ high temperature behavior can help pave the way for their use in ultra-high temperature composite applications. |