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Letter 16037
Blue passivation (trivalent / hexavalent
chrome based)
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I have received some zinc plated samples with blue passivation
(claimed to be trivalent chrome based). Is there any way to verify
(by chemical methods / microscopic methods) whether it is trivalent
OR hexavalent based passivation?
Vijaykumar S. Ijeri
- India
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