JORDAN JOURNAL OF CIVIL ENGINEERING, vol.16, no.2, pp.294-306, 2022 (ESCI)
In this study, a thermionic vacuum arc (TVA) system is
performed in order to apply nano-coatings on the structural rebar using
titanium (Ti), titanium dioxide (TiO2) and titanium diboride (TiB2). The
corrosion reactions occur on the reinforcement surface and in this process, the
coatings acting as barriers on the reinforcement play an important role in
blocking these reactions. The thin films coatings are nano-structured, compact
and homogeneous. The deposition time of thin film in this technique is very
short. After the implementation of these coatings on reinforced concrete samples,
accelerated corrosion tests were done so that the effectiveness of coatings
against corrosion can be examined. These experiments showed that nano-coatings
increased the corrosion resistance of the structural steels used in reinforced
concrete structures. During the harmful effects that threaten the reinforced
sample, the impact of coatings has emerged and reduced the corrosion of steel
reinforcements. The best results were obtained with TiB2-coated sample with 48%
lower corrosion current and this coating also expanded the damage occurrence
time by 119% compared to uncoated rebar.