| 摘要 |
THIS INVENTION RELATES TO A PROCESS FOR PRIMING AN ALUMINUM MATERIAL BY APPLYING A PRIMER CONTAINING THE NITRATE OR RELATED COMPOUND OF A METAL SELECTED FROM ALUMINUM, ZIRCONIUM, CERIUM, CHROMIUM, AND IRON TO THE SURFACE OF THE ALUMINUM MATERIAL SO THAT THE AMOUNT OF ADHERING METAL BECOMES 1.0 mM/M2 OR MORE AND BAKING THE PRIMER, AND ALSO RELATES TO A PRIMER FOR AN ALUMINUM MATERIAL CONTAINING WATER-SOLUBLE ACRYLIC ACID-BASED POLYMERS IN THE RANGE OF 3.5 TO 22.5 G/L AS SOLIDS CONCENTRATION, THE NITRATE OR RELATED COMPOUND OF A METAL SELECTED FROM ALUMINUM, ZIRCONIUM, CERIUM AND IRON IN THE RANGE OF 30 TO 500 G/L, A HYDROFLUORIC ACID-BASED COMPOUND IN THE RANGE OF 1.0 TO 5.0 G/L AS ELEMENTAL FLUORINE, AND AN ORGANIC REDUCING AGENT IN THE RANGE OF 5 TO 30 G/L. THIS INVENTION MAKES IT POSSIBLE TO APPLY A PRIMER TO THE SURFACE OF AN ALUMINUM MATERIAL WITH EXCELLENT CORROSION RESISTANCE.
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