CORROSION-PREVENTING COATING REPAIRS METAL SURFACES

摘要

Alodine 871, a chromate-based touch-up coating, is now available from Henkel of Duesseldorf, Germany. The touch-n-prep coating meets Mil-Dtl-81706B standards. Alodine 871 uses a pen applicator to repair bare areas of metal surfaces to prevent corrosion. Most bare metal surfaces, including aluminum, ferrous and galvanized substrates, are applicable. The coating forms a barrier layer on substrate, stopping moisture from reaching the substrate. Alodine 871 also has low electrical resistance and does not significantly weaken the flow of electrical current through the coating, which can be air-dried or by using hot air or an infrared lamp. In addition to aircraft surfaces, Alodine 871 applies to small parts where a conversion coating tank line is not practical. Henkel says that in addition to the military application, commercial aerospace companies are evaluating the coating.