Black chrome coating for solar collectors and method of electrod

Details Black chrome coating for solar collectors and method of electrod Black chrome coating for solar collectors and method of electrod

1981-08-03

1983-06-21

Kaplan, G. L.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

126901, 204 41, 204 43R, 428666, B32B 1501, C25D 356, C25D 512

Patent

active

043894640

ABSTRACT:
A black chrome electrolyte for the formation of selective layers for solar collectors electrolyte comprising chromium trioxide (CrO.sub.3), fluorosilic acid (H.sub.2 SiF.sub.6) as a catalyst and soidum molybdate (Na.sub.2 MoO.sub.4. 2H.sub.2 O). A substrate is brought into contact with the electrolyte at a current density of 0.40 to 0.60 Acm.sup.-2 and a bath temperature of less than 20.degree. C. for 15 to 30 secs.

REFERENCES:
patent: 3782907 (1974-01-01), Chessin et al.
patent: 4055707 (1977-10-01), McDonald
Chemical Abstracts, vol. 70, 43431d, p. 504, (1969).
M. A. Shluger et al., Translated from Zashchita Metallov., vol. 16, No. 3, pp. 355-358, May-Jun. 1980.

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