High current density zinc sulfate electrogalvanizing process and

Details High current density zinc sulfate electrogalvanizing process and High current density zinc sulfate electrogalvanizing process and

1996-11-21

1998-02-17

Gorgos, Kathryn L.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Depositing predominantly single metal coating

205308, 205311, 205313, 205314, C25D 322, C25D 324

Patent

active

057188181

ABSTRACT:
A high current density electrogalvanizing process and composition are disclosed for reducing high current density dendrite formation and edge burn and controlling high current density roughness, grain size and orientation of a zinc coating obtained from a zinc sulfate aqueous acidic electrogalvanic coating bath. The composition comprises a high molecular weight polyoxyalkylene glycol grain refining agent in combination with a sulfonated condensation product of naphthalene and formaldehyde which is used as an antidendritic agent.

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