2. Chromium plating with hexavalent chromium electrolyte

2.1 General

As we saw earlier, chromium can be found in oxidation state 6. The aqueous solution of chromium trioxide (chromic anhydride) is called chromic acid. In solution in water, depending on the CrO ₃ concentration C, different compounds can be found [3] (figure 2 ):

Concentration (mol/L) Nature of complex

C < 10 ^–2 ${HCrO}_{4}^{-}$

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Chromium plating with hexavalent chromium electrolyte

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References

(1) - Fiches toxicologiques de l'INRS - n° 1. Le trioxyde de chrome. - Cahiers de notes documentaires n° 130, 1 ^er trimestre 1988.
(2) - TOMKINSON (P.) - Chromic acid : molecules, manufacturing and markets....

Theses

- http://www.sudoc.abes.fr
GASQUÈRES (C.) - Évaluation de couches minces originales à base de chrome déposées par MOCVD comme barrière à la diffusion du cuivre. - 2003.
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