Method for autodeposition coating of metal substrate with post-treatment of coating with aqueous sol-gel composition

摘要

The present invention is a method of at least partially coating a metal substrate, wherein the substrate is coated at least partially with a self-depositable coating composition (step (1)), and the self In a method comprising at least a step of contacting said substrate at least partially coated with a precipitating coating composition with an aqueous sol-gel composition (step (2)), at least in part obtained by this method. Post-treatment of a coating composition applied at least partially to the substrate by autodeposition deposition, by contacting the coating composition deposited on the substrate with the aqueous sol-gel composition, as well as the autodeposition deposited coating composition. To the use of an aqueous sol-gel composition for