Thermodiffusion Zn-coating

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Hi there!
I'm working on my post-graduate (master) thesis about thermodiffusion coating on fasteners, and I have a little question for you guys.

Finding information about the coating has proven to be difficult, since I'm especially interested in studies done on the corrosion rate and hydrogen uptake of fasteners with TD-coating compared with general galvanized fasteners. I`ve found some information about these topics, but it's generally information provided by suppliers of the coating, and is not well documented on the web-sites. So I was wondering if anyone knows of any "independent" studies/information about the TD-coating.

Thank you!

Kjetil Gjengstø
Student - Stavanger, Norway