TARNISH RESISTANT ARTICLE, PREPARATION, MANUFACTURE AND METHODS OF USE OF SAME

The present invention is directed to an article having a metal composition (21), preferably silver or copper, and a coating (37) which is resistant to tarnishing due to being coated with a thin, robust, self-assembled monolayer which when applied to an article or substrate is non-toxic, flexible, an...

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Bibliographische Detailangaben
Hauptverfasser:	GU, YUEPENG, WALDECK, DAVID, H, BURLEIGH, THOMAS, DAVID
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 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 MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NANOTECHNOLOGY NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention is directed to an article having a metal composition (21), preferably silver or copper, and a coating (37) which is resistant to tarnishing due to being coated with a thin, robust, self-assembled monolayer which when applied to an article or substrate is non-toxic, flexible, and solderable. The method of the present invention includes an organic washing step and an etching step with sulfuric acid or its equivalent prior to alkylthiolation. La présente invention a trait à un article de composition (21) métallique, de préférence en argent ou en cuivre, et à un revêtement (37) qui résiste au ternissement grâce à une application en couche mince unique, robuste, auto-assemblée et qui, lorsqu'il est appliqué sur un article ou un substrat, est non toxique, souple et apte au soudage. Le procédé de l'invention comporte une étape de lavage organique et une étape d'attaque à l'acide sulfurique ou à un de ses équivalents avant alkylthiolation.