A film‐like network of a compound of chromium existed within the several electrochromium deposits which were examined. This network was associated with the usual crack system observed in chromium electroplates. The film isolated from a heated (482°C for two hours) chromium plate was investigated through spectrographic analyses, microchemical analyses, and x‐ray diffraction studies and was found to consist of Cr 2 O 3 and was about 0.05% by weight of the deposit. The “asplated” compound is probably a hydrated chromium oxide.
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Jerome B. Cohen (1944) studied this question.
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