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Environment-friendly Trivalent Chromate Treatment for Zn Electroplating  

Kim, Soo Won (Namdong Chemical Co., Ltd)
Lee, Chul Tae (Department of Chemical Engineering, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.17, no.5, 2006 , pp. 433-442 More about this Journal
Abstract
Hexavalent chromium passivation, as very effective anti-corrosion method, can not be used in the field of surface treatment for metal, any more. Throughout the world, this regulations which was applied to automotive industries will be extended to all industries including electronics industries in the near future. Therefore a new anti-corrosion method should be established without delay, and trivalent chromium passivation as an alternatives replace the hexavalent chromium passivation for the time being. This paper gives an overview of the currently available trivalent chromium passivation processes, and then it attempts to give an insight to develop a more effective trivalent chromium conversion coating process for possible substitution of the hexavalent chromium passivation process.
Keywords
chromate conversion coating; trivalent chromium; hexavalent chromium;
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