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Title
Korrosionsgeschuetztes Stahlblech, vorzugsweise Karosserieblech fuer den Fahrzeugbau und Verfahren zu seiner Herstellung
Date Issued
1995
Author(s)
Goedicke, K.
Ehlers, K.D.
Litzke, H.
Wolfhard, D.
Steinhoff, H.
Duerr, W.
Patent No
1993-4322465
Abstract
Steel sheet is covered in general with zinc or a zinc alloy. This coating, however, does not prevent the formation of white rust, so that further protective coatings are required for which environmentally friendly production processes are required. According to the invention, an oxide layer mainly consisting of silicon and/or aluminium oxide, with a coating thickness of less than 2.0 g/m->2 is deposited in a vacuum on the zinc or zinc alloy coating. This type of temporary corrosion-protective steel sheet is mainly used in the construction, plant construction, domestic appliance and automobile industries.
Language
de
Patenprio
DE 1993-4322465 A: 19930706