Abstract
Hydrophobic silane/graphene oxide (GO) composite coating implanted with BTAH inhibitor (BTAH-silane/GO) was successfully fabricated on copper surface, and characterized using ATR-FTIR, Raman, EDS, XPS and EIS techniques. The results showed that GO was successfully covalently reacted with the silanol groups to form a Si-O-C band and BTAH inhibitor was uniformly embedded in the composite coating. The BTAH-silane/GO coated copper possessed the desirable high impedance modulus (Z0.01 Hz) of 5.7 MΩcm2 and high protection efficiency of 99.97%. The corrosion current density of the coated copper reduced over 3 orders of magnitude compared to its bare in 1 M neutral NaCl solution, and maintained over 99% even after 120 h immersion. In addition, the incorporated BTAH inhibitor exhibited the self-healing performance of BTAH-silane/GO coating in 1 M neutral NaCl solution.
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