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Translation for "Blaubeizen"

2003

Hallo,

I am looking for the right technical term what we call in Germany "blaubeizen". "Blaubeizen" is pickling of brass with a black color.

Reinhard Schmittner
LINOS Photonics - Munich, Bavaria, Germany

If I understand your question, there is no official translation for this type of process.
ASM HANDBOOK Volume 5 Surface Engineering refers to this process as Coloring.
Alloys containing greater than 85% Cu are colored black by immersion in sulfur-containing solutions, or by anodizing in NaOH.
Different solutions are used to color Cu alloys containing less than 85% Cu.

Toby Padfield
- Michigan
2003

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