| 摘要 |
PURPOSE:To easily obtain an Al alloy having a surface layer with superior corrosion and wear resistances by forming an oxide film on the surface of Al or an Al alloy followed by anodizing or dipping in an aq. soln. contg. a special derivative of the formula. CONSTITUTION:An oxide film is formed on the surface of Al or an Al alloy by a chemical means or the like followed by anodizing or dipping in an aq. soln. contg. a dithiol-S-triazine derivative of the formula (where R is -NR2', -NHR' or -SM, R' is same or different hydrogen, substd. lower alkyl, substd. phenyl, substd. benzyl, or the like, the substituent is -H, -OH, -COOH or -NH2, M is Na, K, H or an amine and at least one of M is Na or K). Thus, an Al alloy having a surface layer with superior corrosion and wear resistances is obtd. in such an easy and simplemanner while omitting complex processes of a conventional method. |
