| 摘要 |
Described is a method of phosphatizing steel, aluminium or galvanized or alloy-plated steel or aluminium surfaces by spraying the surface with, or dipping the surface in, a zinc-containing phosphatization solution for between 3 seconds and 8 minutes. The method is characterized in that the phosphatization solution contains 0.2 to 3 g/l of zinc ions, 3 to 50 g/l of phosphate ions, 1 to 100 mg/l of nickel or cobalt ions, as well as one or more accelerators and not more than 0.5 g/l of nitrate ions. Optional additives are lithium, copper and/or manganese.
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| 申请人 |
HENKEL KGAA, 40589 DUESSELDORF, DE |
发明人 |
BRANDS, KARL-DIETER, 40593 DUESSELDORF, DE;GEKE, JUERGEN, DR., 40225 DUESSELDORF, DE;GOTTWALD, KARL-HEINZ, 50374 ERFTSTADT, DE;MAYER, BERND, DR., 40597 DUESSELDORF, DE;KUHM, PETER, DR., 40724 HILDEN, DE |
