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PVD finishing problems
I work in a company that coats its products with PVD (brass color mainly) the problem is that we are using a PVD coating with Ti
(metallic layer) and then ZrCN. When the parts come out of the chamber they seem OK, but after a few time they become foggy and loose glow! Is there any theoretical explanation for this? With the microscope I've been able to notice that the roughness of the parts is a little higher then what it should be...but at the same time it seems that the parts absorb water vapor!
Can anybody give a little help with this?
- AVEIRO - PORTUGAL
September 17, 2011
Take care with: poor cleaning (Oil and other residues), buffing residues on plated parts and plating residues.
- Sao Paulo sp brazil
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