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20 0 0 2 0 7 铝及其合金表面的耐蚀覆层将铝或其合金的表面进行处理 ,使其表面呈一个多孔层 ,然后将其在含有偏钒酸根离子的溶液或凝胶液中处理 ,随后再于含有一种可与偏钒酸根离子发生共沉淀的金属离子的溶液中处理 ,使其在表面多孔层的孔中形成微溶的化合物 ,这样就在铝
20 0 0 2 0 7 Corrosion-resistant coating on aluminum and its alloy surface The surface of aluminum or its alloy is treated to have a porous layer on its surface and then immersed in a solution or gel containing metavanadate ions Followed by treatment in a solution containing a metal ion coprecipitated with metavanadate ions to form a sparingly soluble compound in the pores of the surface porous layer so that the aluminum