MOLYBDENUM PHOSPHATE BASED CORROSION RESISTANT CONVERSION COATINGS

Improvements in MolyPhos corrosion resistant coatings for zinc plated surfac es and zinc alloy surfaces are presented, which enhances corrosion protection i n marine environments, and other corrosive atmospheres. In particular a cerium fluoride stabilized MolyPhos coating, and organic acid stabilize...

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Bibliographische Detailangaben
Hauptverfasser:	LAWLESS, PATRICK T, TRUMBLE, WILLIAM P
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	Improvements in MolyPhos corrosion resistant coatings for zinc plated surfac es and zinc alloy surfaces are presented, which enhances corrosion protection i n marine environments, and other corrosive atmospheres. In particular a cerium fluoride stabilized MolyPhos coating, and organic acid stabilized coatings a re provided, which improve resistance to standard salt fog test exposures to at least 300hrs, thus extending applicability of a conventional MolyPhos coatin g to applications to telecommunications, electronics, automotive and aviation equipment. MolyPhos coatings offer promise as an environmentally friendly alternative to conventional chromate corrosion coatings.