| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
A Career in Powder Processing and Additive Manufacturing: A MPMD Symposium Honoring David Bourell
|
| Presentation Title |
Cr and Al Diffusion Coatings for Improved Corrosion Resistance of AM Surfaces |
| Author(s) |
Emma M. White, Ceyhun Oskay, Michael Kerbstadt, Clara Schlereth, Mathias Galetz |
| On-Site Speaker (Planned) |
Emma M. White |
| Abstract Scope |
While AM offers many advantages, one key disadvantage is the surface finish, which is generally rougher than conventional parts. Post-processing is key to enabling industrial application of AM components, especially at high temperatures and in aggressive environments. Cr and Al diffusion coatings have been developed using pack cementation and slurry processing to improve the properties of Ni-based and Fe-based AM parts. These coatings can not only decrease the surface roughness but also enrich the surface with Cr/Al, improving the high temperature oxidation/corrosion properties. Pack cementation versus slurry coatings have been compared on Ni/Fe-based alloys and the resistance of these coatings demonstrated in aggressive industrial conditions, such as over 1000°C or in metal dusting atmospheres. The influence of the coatings on phase formation and mechanical properties of the AM materials will also be discussed, moving towards standardization of post-processing of AM parts and increasing sustainability of AM components through longer lifetimes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Powder Materials, Additive Manufacturing |