| abstract |
Aqueous binder composition for the formation of a sacrificial corrosion protection coating, said composition being free of chromates, and more preferably of borates and molybdates, characterized in that said binder composition has a pH less than 6 and comprises a binder, particles of at least one metal oxide and at least one metal phosphate, said binder comprising a hydrolyzed organosilane oligomer, and whereby the proportion by weight of said particles of at least one metal oxide with respect to the total weight of the dry mass of said composition binder is greater than or equal to 75%. |