About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Architected Structures and Multifunctional Metamaterials
|
| Presentation Title |
Fabrication of 316L Stainless Steel with Biofunctional Coatings via Laser Powder Bed Fusion |
| Author(s) |
Naoyuki Nomura, Xiao Wang, Mingqi Dong, Weiwei Zhou |
| On-Site Speaker (Planned) |
Naoyuki Nomura |
| Abstract Scope |
316L stainless steel is widely used for patient-specific biomedical implants due to its excellent mechanical properties and corrosion resistance. However, its inherently bio-inert surface remains a significant limitation, often increasing the risk of postoperative infections. To address this, we leverage the complex interaction of internal forces within the melt pool during laser powder bed fusion (L-PBF) to drive the in-situ formation of biofunctional coatings. By decorating 316L powders with bioactive ceramics, we successfully fabricated 316L builds with robust coatings that significantly enhance light absorption compared to those without coatings. This enhancement endows the builds with a potent photoactivated bacterial inactivation (PBI) effect for prospective therapeutic applications. Notably, this in-situ functionalization strategy is effectively extended from solid components to complex porous architectures. This research provides a streamlined approach for developing next-generation multifunctional implants with integrated antibacterial capabilities. |