Active corrosion of magnesium by polyphenylamine/ase-enhanced silane coatings.

Scientists have synthesized a composite containing different proportions of ody (Pr) and polyphenylamine (PANI).
, due to environmental problems, many studies have been carried out to find a good alternative to the conversion film. Silicone coatings containing corrosion inhibitors may be a good choice

. In a new study, composites containing different proportions of asase (Pr) and polyphenylamine (PANI) were synthesized and prepared. SEM and FE-SEM images, as well as EDS and MAP, were prepared to study the synthesis and formation of PANI and Pr structures.
different concentrations of inhibitors and disperse them in the silane hybrid substrate, which is then deposited by immersion in the AZ31 magnesium alloy. The results of identification and analysis show that the formation of the compounds of these two organic inorganic inhibitors and the replacement of ody particles in the aniline structure.
the contact angle
, the corrosion resistance of the composite material in a 3.5% solution was evaluated. Adding Pr-PANI to the silane coating results in an increase in contact angles. The increase in the contact angle of a sample with a ratio of 2000 ppm is greater than the increase in the contact angle of a sample with a ratio of 1000 ppm, indicating the presence of more OH-based coatings. These results confirm the output of FT-IR and TGA data.
In addition, magnesium samples coated with silane degrade completely after 24 h and corrosion products are observed on the sample, but after 24 h the silane samples coated with Pr-PANI are less damaged and the concentration of 2000 ppm samples is more effective than other concentrations.
the study was published in March 2020 in volume 140 of Organic Coatings Progress.
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