corrosion inhibitor (most effective method) Are the chemicals react with the metal surface or the surroundings form a sustainable surface layer has a protective effect and prevent corrosion. Protective effect of these substances have been is because the molecules or ions is adsorption on the surface of the metal, forming thin layers of protection. The process reduces the speed of corrosion due to the following causes: + Increase of world polarization anốt or cathode. + Reduces the speed of the ion to diffuse to the surface of the metal. + Increase the resistance of the metal surface.
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