EN 12373-7-1998 铝和铝合金.阳极氧化.第7部分:通过测量事发经酸处理的磷酸/铬酸中浸泡后的质量损失评定封闭阳极氧化膜
Aluminium and aluminium alloys?Anodizing?Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment