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News number: 8807151425

15:52 | 2009-10-07

Science

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Nanostructured Coatings Enhance Resistance of Surfaces against Corrosion

TEHRAN (FNA)- The researchers at Tarbiat Modares University succeeded in increasing the resistance of steel to corrosion using nanometric layers.



"We applied a thin layer of titanium oxide on a steel background by means of the physicochemical sol-gel method. This operation strengthens the steel against corrosive environments," Ali Shaneghi, one of the project researchers told INIC.

He mentioned the advantages of this method as its simplicity, homogeneity, and high uniformity of the applied coating.

In this method, alkoxide tetra n-butyl orto-titanate (TBT) was used to prepare sol-gel solution.

Elaborating on the procedure of the research, Shaneghi reiterated, "First, we mixed ethanol and ethyl acetoacetate together at the room temperature. Then, we added TBT to the solution and stirred the solution well. Then, we added some drops of distilled water to the solution while it was being stirred."

For polymeric reactions, the prepared solution was left for 6 hours. After surface preparation of the samples, titanium oxide nanoparticle coating was applied to the steel surface by submerging method, he added.

It is possible to reduce the costs of corrosion in petroleum, gas, and petrochemical industries by this method.

The outer parts of high buildings can be prevented from being quickly corroded by applying nanostructured titanium coatings. These coatings could be utilized in medicine and sanitary applications as well.