Chemistry: electrical and wave energy – Processes and products
Patent
1986-09-17
1988-07-05
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 321, 204 51, C25D 534, C25D 304
Patent
active
047552638
ABSTRACT:
What is described herein is a method of electroplating an adherent chromium deposit on a chromium substrate. The process is characterized by chemically oxidizing the chromium substrate before starting the electrodeposition of chromium thereon. A suitable chemical oxidizing agent is hydrogen ion, which can be furnished by a dilute acid solution. The invention is applicable to any chromium electroplating bath, including high energy efficient chromium baths, such as HEEF-40 baths, which are presently in commercial use.
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Birght R. E.
Hsing Ben C.
M&T Chemicals Inc.
Marcus S. A.
Niebling John F.
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