摘要：

The present invention encompasses a method for treating a metal substrate to improve corrosion protection and an acidic aqueous solution of the adhesive connection metal surface, the acidic aqueous solution comprising an effective amount of a water soluble trivalent chromium compound, fluorozirconate, an effective amount of at least one of corrosion inhibitors such as benzotriazole, fluoro metal compound, zinc compound, a thickener, a surfactant, per liter of the acidic solution and to is at least about 0.001 mole as a stabilizer for the aqueous solution of polyhydroxy and / or carboxyl compound.

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