Fig. 7From: The use of Robinia pseudoacacia L fruit extract as a green corrosion inhibitor in the protection of copper-based objectsA Coupons in a corrosive solution of sodium chloride 0.5 after 30 days of immersion. ×60 magnification; B coupons in a corrosive solution of sodium chloride 0.5 after 30 days of immersion. ×40 magnificationBack to article page