Microstructure and Corrosion Characterization of Laser-Clad TiC/TiB۲/Reduced Graphene Oxide Nanocomposite Coating on AISI ۳۱۶L Stainless Steel

A highly corrosion-resistant TiC/TiB۲/reduced graphene oxide (RGO) nanocomposite coating was successfully deposited on AISI ۳۱۶L stainless steel via pre-placed powder laser cladding using titanium (Ti), boron carbide (B+C), and reduced graphene oxide as precursor materials. The RGO content was varied at ۰.۵, ۱.۰, and ۳.۰ wt.%. Results revealed that the coating containing ۱.۰ wt.% RGO improved the corrosion resistance of ۳۱۶L stainless steel by more than ۲۱ times compared to the uncoated substrate. This substantial enhancement significantly broadens the application range of ۳۱۶L stainless steel in environments requiring superior corrosion resistance and surface hardness.

کلیدواژه ها:

Corrosion resistance ، Laser cladding ، Reduced graphene oxide ، ۳۱۶L stainless steel ، Titanium carbide/boride