CORROSION RESISTANCE PASSIVATION FORMULATION AND PROCESS OF PREPARATION THEREOF
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United States of America Patent
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Issued Date -
Jan 16, 2014
app pub date -
Mar 28, 2012
filing date -
Mar 30, 2011
priority date (Note) -
Abandoned
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Abstract
The present invention provides a passivation formulation and a process for forming trivalent chromium-based passivation film on zinc and zinc alloys. The passivation film incorporates nano-ceramic particles resulting in higher corrosion resistance as compared to a trivalent chromium passivation film without nano-sized ceramic particles. The corrosion resistance of the coating is further enhanced by a topcoat or a sealant
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