Is the sol-gel coating formed on a carbon steel surface by dip coating its coupon in a chemical bath of HfCl4+ ionic surfactant solution followed by heating at 550 degrees celsius can be named Hf conversion coating on a carbon steel surface?
Dear Dr. Harshal Mehta ,
Conversion Coatings (CCs) imbue metals with special properties, such as corrosion and wear resistance, paint receptivity, or aesthetic effects. These treatments are generally straightforward to implement and open up a plethora of new applications. However, because of the chemical nature of the process, there are caveats to conversion coating that are important to understand.
For more details, please see the source:
-A Guide to Conversion Coating by Ralph Zoontjens, PCI – March 25, 2022
Available at: https://www.pcimag.com/articles/109920-a-guide-to-conversion-coating
My best regards, Pierluigi Traverso.
Thank you Pierluigi Traverso sir. I will check out the article you have mentioned.
Hello Harshal, the conversion coatings usually involve deposition of a salt/co-metal on an activated metal substrate. To identify your coatings a s a conversion coating, I suggest to look at the final structure of the coating and its functionality. Does the final coating have HF salt in it or is it a polymer coating where the surfactant is used to enable the deposition?
Shyama Deepak Ranade ma'am the final composition of my coating has Hf metal ion and yes, surfactant was used to enable deposition. Final coating have does not have HF (hydrogen fluoride) salt in it or any other polymer.
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