Analysis of anti-corrosion mechanism of anti-corrosion coatings-Bright New Material Technology

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Analysis of anti-corrosion mechanism of anti-corrosion coatings

Release time:

2022-01-05

Analysis of anti-corrosion mechanism of anti-corrosion coatings

The anti-corrosion mechanism of anti-corrosion coatings is to form a shielding layer on the metal surface, preventing water and oxygen from coming into contact with the metal surface. However, a large number of studies have shown that coatings always have a certain degree of breathability and water permeability. The rate of water and oxygen permeability of coatings is often higher than the rate of water and oxygen consumption by exposed steel surface corrosion. Therefore, coatings cannot achieve complete shielding effect. The anti-corrosion effect of coatings is hindered by the decrease in conductivity, which hinders the progress of corrosion. Although coatings with high conductivity do not have good anti-corrosion ability, coatings with low conductivity have no clear relationship between conductivity and anti-corrosion performance. Therefore, the wet adhesion between coatings and steel surfaces plays an important role in anti-corrosion.

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