CORROSION-RESISTANT METALLIC COATINGS ON LOW-CARBON STEEL

Corrosion resistant coatings of various metals and alloys such as Si, Ti, Ni and Ti-Ni were formed on steel rebars by fluidized bed chemical vapor deposition (FBR-CVD), paint-and-heat or FBR-plasma spray techni ques. The paint-and-heat metallization and FBR-plasma spray are powder coating techniques that can be applied easily and economically on new components as well as on existing steel structures, such as bridges. These metallic powder coatings provide non-sacrificial, superior corro sion protection for a long time. Ti-Ni (70:30 wt.%) coatings on steel rebars provided a 20 fold increase in corrosion resistance over uncoat ed steel. These metallic coatings can be used to prevent corrosion in many industrial applications.