EUROLAB laboratory provides testing and compliance services within the scope of ISO 10309 standard. When testing metallic coatings, it specifies a method to reveal pores or other discontinuities that are cathodic to iron and steel that are not visibly affected by ferricyanide and chloride ions during the test period. This method is particularly useful for thick, hard chrome coatings used for wear resistance.
With some coating materials, a very thin layer of sodium chloride solution is dissolved during an application time of 10 minutes.
The effect of such a dissolution is that potential porosity, ie pores covered with very thin layers, is sometimes re-explored. Experience has shown that such potential porosity frequently reappears during actual service.
Base metal ions formed in corrosion cells under discontinuities in metallic coatings migrate to the treated test paper held in contact with the coating surface. Base metal ions remaining on the treated test Paper form a blue colored mark or dot when the treated Paper is then dipped in a ferricyanide indicator Solution.
EUROLAB assists manufacturers with ISO 10309 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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