| abstract |
Process for phosphating surfaces made of steel, galvanized steel and / or aluminum and / or alloys which consist of at least 50% by weight iron, zinc or aluminum, phosphating with a phosphating solution and after phosphating with or without intermediate rinsing rinsed with water with an aqueous rinse solution which contains 0.001 to 10 g / l of copper ions, characterized in that the rinse solution has a pH in the range from 3 to 10 and additionally contains 0.1 to 50 g / l of one or more silanes which contain at least one water-hydrolyzable and at least one water-non-hydrolysable substituent on the silicon. |