Sealed hard coat corrosion resistance vs coating thickness
I am interested in hard coating 6061 for corrosion resistance and am planning a sodium dichromate seal. The hard coat will be according to Mil-A-8625 [link is to free spec at Defense Logistics Agency, dla.mil]F, Type III, Class 1. For dimensional tolerancing reasons I would like to keep the coat thin, but a having trouble finding a reference for corrosion resistance vs sealed hard coat thickness. It seems that if its sealed the corrosion resistance should not be affected by thickness.
Does anyone have any info?
- New River, Virginia
Why hard coat? If corrosion resistance is your aim why not class I or II?
surface treatment shop - Stroud, Glos, England
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