| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
High-quality Diamond Films on Q-carbon Coated Austenitic Stainless Steels 304 and 316 |
| Author(s) |
Pratik Joshi, Siddharth Gupta, Ariful Haque, Jagdish Narayan |
| On-Site Speaker (Planned) |
Pratik Joshi |
| Abstract Scope |
Coatings of diamond-related materials are appealing owing to their high hardness but exhibit inadequate adhesion and toughness, especially on stainless steel substrates. In this study, we have studied the effect of surface scratch and Q-carbon interlayer on the nucleation and growth of CVD microdiamonds on 304 and 316 austenitic SS. The quality of the diamond films was assessed using SEM, XRD, and Raman spectroscopy. We have also characterized the inclusions in diamonds grown on bare SS using EBSD. The Q-carbon seed layer helped growth of better quality diamonds (50% less graphitic) with FWHM of 11.5 cm-1 and demonstrated higher nucleation density in comparison with amorphous carbon-coated and bare 316 SS substrates. Diamonds grown on Q-carbon displayed ballas type of microstructure indicative of high toughness. This study on Q-carbon nanocomposite coatings provides a new pathway for fabricating ultrahard carbon-based coatings on stainless steels for biomedical and tribocorrosive applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Iron and Steel |