Patent application number | Description | Published |
20080271823 | Method for Steel Strip Coating and a Steel Strip Provided With Said Coating - Coating steel strips comprising, in % by weight, C: ≦1.6%, Mn: 6-30%, Al: ≦10%, Ni: ≦10%, Cr: ≦10%, Si: ≦8%, Cu: ≦3%, Nb: ≦0.6%, Ti: ≦0.3%, V: ≦0.3%, P: ≦0.1%, B: ≦0.01%, the rest being iron and unavoidable impurities, and a method of forming steel strips are described. Up to now, such steel strips were not adequately coatable, with a metal coating ensuring outstanding corrosion-resistance and good welding properties. This is ensured by applying an aluminium layer to the steel strip before final annealing and applying the metal coating to said aluminium layer after final annealing. | 11-06-2008 |
20090098295 | PROCESS FOR PRODUCING A CORROSION-PROTECTED STEEL SHEET - A process for producing a corrosion-protected steel sheet for coating with an organic coating agent, includes vacuum-coating the steel sheet, which is protected against corrosion with a layer of zinc or zinc alloy, with at least one additional metal or a metal alloy. After vacuum-coating, the steel sheet is subjected to a thermal diffusion treatment and finally cooled down. The process is characterized according to the invention in that cooling takes place with a water-based coolant. | 04-16-2009 |
20090139872 | Method for producing a sheet steel product protected against corrosion - A cost-favorable process for production of corrosion-resistant sheet steel products, having good characteristics of use for certain application purposes includes applying a zinc-containing coating by electro-galvanizing a flat steel product, finally cleaning mechanically and/or chemically the flat steel product, applying a magnesium-based coating to the finally cleaned zinc-containing coating by means of vapour deposition, and heat treating the coated flat steel product to form a diffusion or convention layer between the zinc-containing coating and the magnesium-based coating at a temperature of 320 ° C. to 335 ° C. under normal atmosphere. | 06-04-2009 |
20100003538 | Steel sheet provided with a corrosion protection system and method for coating steel sheet with such a corrosion protection system - A flat steel product provided with a coating system, which in the coated state possesses an optimized combination of corrosion resistance and welding capacity, includes a base layer formed from a steel and a corrosion protection system applied onto the base layer. The corrosion protection system comprises a metallic coating less than 3.5 μm thick, formed from a first metallic layer applied onto the base layer and a second metallic layer applied onto the first metallic layer, wherein the second metallic layer has formed a metallic alloy with the first metallic layer. The corrosion protection system also comprises a plasma polymer layer applied onto the metallic coating. | 01-07-2010 |
20100040783 | PROCESS FOR PRODUCING A CORROSION-PROTECTED STEEL SHEET - A process for producing a corrosion-protected steel sheet for coating with an organic coating agent, includes vacuum-coating the steel sheet, which is protected against corrosion with a layer of zinc or zinc alloy, with at least one additional metal or a metal alloy. After vacuum-coating, the steel sheet is subjected to a thermal diffusion treatment and finally cooled down. The process is characterized according to the invention in that cooling takes place with a water-based coolant. | 02-18-2010 |
20100178579 | Bipolar Plate for a Fuel Cell and Fuel Cell Stack - A bipolar plate which can be produced particularly economically for a fuel cell, with which a high degree of efficiency is guaranteed over a long service life. The bipolar plate has a core layer consisting of a steel material, the surfaces of said core layer, which are associated with the respective electrolyte carriers of the fuel cell, having a corrosion protection layer, protecting the core layer against corrosion. The corrosion protection layers consist of a metal material and extend on both sides over the whole surface of the core layer. At the same time the corrosion protection layers are in turn coated over the whole surface with an electrically conductive functional coating, which is essentially entirely impermeable for the metal ions emerging from the core layer and/or the corrosion protection layers. The invention likewise relates to at least one fuel cell comprising a bipolar plate according to the invention. | 07-15-2010 |
20120121927 | STEEL SHEET PROVIDED WITH A CORROSION PROTECTION SYSTEM AND METHOD FOR COATING STEEL SHEET WITH SUCH A CORROSION PROTECTION SYSTEM - A flat steel product provided with a coating system, which in the coated state possesses an optimized combination of corrosion resistance and welding capacity, includes a base layer formed from a steel and a corrosion protection system applied onto the base layer. The corrosion protection system comprises a metallic coating less than 3.5 μm thick, formed from a first metallic layer applied onto the base layer and a second metallic layer applied onto the first metallic layer, wherein the second metallic layer has formed a metallic alloy with the first metallic layer. The corrosion protection system also comprises a plasma polymer layer applied onto the metallic coating. | 05-17-2012 |
20120129001 | METHOD FOR THE PRODUCTION OF A FLAT STEEL PRODUCT AND FLAT STEEL PRODUCT - A flat steel product, comprising a base layer consisting of a steel material, and a multilayer coating applied thereto, and a method for producing the flat steel product. | 05-24-2012 |