Abstract

1,2,3-Benzotriazole (BTA) stabilizes the passive state of the MNZh 5-1 alloy in a chloride borate buffer with pH 7.40 at cBTA = 0.5 mM, which is lower than for the metal components of the alloy. The adsorption of BTA on the surface of MNZh 5-1 is polymolecular. The free energy of adsorption −ΔGa0 for monolayer BTA coverage of the alloy was higher than for the alloy component metals (Fe, Ni, Cu).

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