Anti-corrosion property of multilayer Ti3C2Tx reinforced chemically bonded silicate ceramic coatings in salt, alkaline and acid environments
Huaijun Guan, Fan Lv, Dongsheng Li, Yongguang Wang, Xiaolong Lu, Da Bian
Abstract
Great potential has been exhibited by MXene (Ti 3 C 2 T x ) for improving the anti-corrosion property of polymeric matrixes. However, the anti-corrosion performance of Ti 3 C 2 T x as a filler introduced into silicate bonded ceramic coating in H 2 SO 4 , NaOH and NaCl solutions still remains elusive. Herein, the effect of Ti 3 C 2 T x introduction on the contact angle and water uptake of silicate bonded ceramic coatings was illustrated. The anti-corrosion property of ceramic coatings was investigated by using electrochemistry measurements. The results exhibited that the silicate bonded ceramic coating with 1.6 wt% Ti 3 C 2 T x possesses the best anticorrosion in three different solutions respectively. Interestingly, it exhibited the highest impedance modulus (|Z| 0.01Hz ) of 3.45 × 10 6 Ω cm 2 and the lowest corrosion current density (I corr ) value of 1.18 × 10 −8 A/cm 2 in the 5 wt% H 2 SO 4 solution. This work also elucidated the anti-corrosion mechanism of Ti 3 C 2 T x reinforced silicate bonded ceramic coating in three different solutions.