About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
Microstructure-Engineered Chromium Coatings by Diffusion Pack Cementation for Enhanced Corrosion and Hydrogen Barrier Performance |
| Author(s) |
Sri Venkata Sarath Chandra Sistla, Akshay Yadav, Chandan Srivastava |
| On-Site Speaker (Planned) |
Sri Venkata Sarath Chandra Sistla |
| Abstract Scope |
Chromium coatings were deposited on mild steel by diffusion-controlled pack cementation at 850 °C for 8, 10, 12, and 14 h to investigate the influence of coating microstructure on surface performance. Phase evolution was characterized using X-ray diffraction, while crystallographic texture was analyzed by electron backscatter diffraction. Among the coatings, FeCr1 exhibited superior corrosion resistance owing to the development of a low-energy crystallographic texture and the formation of a stable passive oxide layer. Electrochemical hydrogen permeation studies further demonstrated that FeCr1 provided the highest resistance to hydrogen ingress, exhibiting a negligible increase in permeation current during charging. The enhanced hydrogen barrier performance is attributed to the evolved defect structure, which promotes effective hydrogen trapping and suppresses hydrogen transport. These findings demonstrate the critical role of microstructural engineering in designing chromium coatings with improved corrosion resistance and hydrogen barrier properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Characterization, Iron and Steel |