ANTI-CORROSION SURFACE MULTILAYER STRUCTURE FOR ALUMINUM COMPRISING CERIUM OXIDE PARTICLES AND A METHOD OF FORMING SUCH MULTILAYER STRUCTURE

摘要

A multilayer structure for anodic oxidized aluminum alloy surfaces comprising an aluminum substrate (10), a porous anodic aluminum oxide layer (11), wherein the pores (12) are at least partly filled with cerium oxide particles (13). The structure comprises 50-90 %(vol/vol) aluminum oxide and 10-50 %(vol/vol) cerium oxide. A method for producing such structure comprising immersing a porous aluminum oxide layer in an aqueous solution of cerium oxide particles and drying said object in air.