About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Scalable Processing of Q-Carbon by Plasma-Enhanced Chemical Vapor Deposition for High-Temperature Coating Applications |
| Author(s) |
Sriram Srinivasan, Naveen Joshi, Pranay Kalakonda, Fahad Munshe, Jagdish Narayan |
| On-Site Speaker (Planned) |
Sriram Srinivasan |
| Abstract Scope |
Owing to its exceptional hardness and chemical inertness, Q-carbon (metastable carbon phase with high sp3 content) is emerging as a next-generation protective coating. While the conventional processing using laser-melting and rapid quenching limits scalability, we report Q-Carbon fabrication by plasma-enhanced chemical vapor deposition (PECVD) as a scalable, controllable alternative. Methane was used to deposit diamond-like carbon (DLC), which was then converted into Q-carbon via Frenkel defect formation facilitated by low-energy Ar-ion bombardment. Raman spectroscopy, XPS, and XRD were used to validate the conversion of DLC into Q-carbon, and the surface morphology was characterized by using SEM. Further, no measurable weight loss was observed up to 600 oC when subjected to thermogravimetric analysis, exceeding the operating temperature of conventional DLC coatings (300 – 400 oC). In combination with the intrinsic room-temperature ferromagnetism (confirmed by VSM/SQUID characterization), PECVD-grown Q-carbon emerges as a scalable material for coatings in magneto-thermal and high-temperature sensor applications. |
| Proceedings Inclusion? |
Planned: |