Letter 14053

Anodization  

 

When anodizing some components made out of AZ5GU(AA 7075), black patches were observed. What may be the cause of it? How it can be remedied? Whether this black patches will lead to corrosion?

Venukuttan
Isro - Trivandrum, Kerala, India

 

Please exactly state the bath conditions??

Vikram Patel
- Gujarat, India

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