Anti-corrosion property of multilayer Ti₃C₂T_x reinforced chemically bonded silicate ceramic coatings in salt, alkaline and acid environments

Great potential has been exhibited by MXene (Ti₃C₂T_x) for improving the anti-corrosion property of polymeric matrixes. However, the anti-corrosion performance of Ti₃C₂T_x as a filler introduced into silicate bonded ceramic coating in H₂SO₄, NaOH and NaCl solutions still remains elusive. Herein, the effect of Ti₃C₂T_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% Ti₃C₂T_x possesses the best anticorrosion in three different solutions respectively. Interestingly, it exhibited the highest impedance modulus (|Z|_0.01Hz) of 3.45 × 10⁶ Ω cm² and the lowest corrosion current density (I_corr) value of 1.18 × 10⁻⁸ A/cm² in the 5 wt% H₂SO₄ solution. This work also elucidated the anti-corrosion mechanism of Ti₃C₂T_x reinforced silicate bonded ceramic coating in three different solutions.