| 摘要 |
The invention relates to a method for sealing-in decorative anodised films on aluminium and aluminium alloy surfaces in aqueous solutions containing phosphonic acids or their alkali metal and/or alkanolamine salts at elevated temperature in solutions containing 1-phosphonopropane-1,2,3-tricarboxylic acid and/or 1,1-3-diphosphonopropane-2,2-dicarboxylic acid as sealing coating inhibitor. |
