SYSTEMS AND METHODS FOR TREATING A SUBSTRATE

Disclosed herein is a system for treating a magnesium or a magnesium alloy substrate comprising: a first pretreatment composition comprising a fluorometallic acid and free fluoride in an amount of 10 ppm to 500 ppm based on total weight of the first pretreatment composition and having a pH of 1.0 to...

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Bibliographische Detailangaben
Hauptverfasser:	KUMAR, Kuldeep, ALLEN, Kristi Maree, HARRIS, Rachel Dory, BROWN-TSENG, Elizabeth Stephenie, BOWLES, Steven Edward, MCMILLEN, Mark William, BEZER, Silvia, LEMON, Steven Joseph
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS THEREFOR 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 ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	Disclosed herein is a system for treating a magnesium or a magnesium alloy substrate comprising: a first pretreatment composition comprising a fluorometallic acid and free fluoride in an amount of 10 ppm to 500 ppm based on total weight of the first pretreatment composition and having a pH of 1.0 to 4.0; and a second pretreatment composition comprising a lanthanide series metal, the second pretreatment composition being substantially free of peroxide. Also disclosed are methods of treating a magnesium or magnesium alloy substrate. Treated magnesium and magnesium alloy substrates also are disclosed. Est divulgué dans la présente invention un système de traitement d'un substrat de magnésium ou d'alliage de magnésium comprenant : une première composition de prétraitement comprenant un acide fluorométallique et du fluorure libre en une quantité de 10 ppm à 500 ppm sur la base du poids total de la première composition de prétraitement et ayant un pH de 1,0 à 4,0 ; et une seconde composition de prétraitement comprenant un métal en série de lanthanides, la seconde composition de prétraitement étant sensiblement exempte de peroxyde. Sont également divulgués des procédés de traitement d'un substrat de magnésium ou d'alliage de magnésium. Des substrats traités de magnésium et d'alliage de magnésium sont également divulgués.