Process for the deposition of thick chromium films from trivalen

Details Process for the deposition of thick chromium films from trivalen Process for the deposition of thick chromium films from trivalen

1980-06-09

1981-10-06

Kaplan, G. L.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

204 41, 204 51, C25D 306, C25D 512, C25D 514

Patent

active

042936209

ABSTRACT:
A process for plating thick chromium coatings for engineering applications comprises depositing a thin initial layer from a low concentration chromium III/thiocyanate bath and depositing the bulk of the remaining thickness from a relatively higher concentration chromium III/thiocyanate bath. Deposits produced by this two-stage process are more cohesive and smoother than those obtainable by plating the entire thickness from the high concentration bath alone.

REFERENCES:
patent: 4062737 (1977-12-01), Barclay et al.
patent: 4141803 (1979-02-01), Barclay et al.
patent: 4161432 (1979-07-01), Barclay et al.

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