STABLE COMPOSITION FOR TREATING A METAL SURFACE TO FORM A CONVERSION OR PASSIVATION COATING ON THE SAME AND PROCESS FOR TREATING A METAL SURFACE TO FORM A CONVERSION OR PASSIVATION COATING ON THE SAME

摘要

Stable composition for treating a metal surface to form a conversion or passivation coating thereon and process for treating a metal surface to form a conversion or passivation coating thereon are described conversion and passivation coatings and methods for treat metal surfaces such as steel and aluminum. The coating compositions comprise a silane and a stabilizing agent. The methods comprise contacting the required metal surface with the coating composition.