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SEM images of the a) bare Zn–Al sheet and b) ZIF‐90 film on the Zn–Al alloy. c) Water contact angle of the ZIF‐90‐coated Zn–Al alloy. d) Potentiodynamic polarization curves of the bare Zn–Al alloy sheet and ZIF‐90‐coated Zn–Al alloy in 3.5% NaCl solutions after a 30 min immersion. Adapted with permission.286 Copyright 2018, Elsevier.
