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An improved process for the electro deposition of chromium
An improved process for the electro deposition of chromium
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机译:一种电镀铬的改进工艺
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摘要
223,611. Grah, R. Sept. 14, 1923. Chromium, depositing. - The electrolyte contains chromium oxide and hydrochloric acid or acetic acid preferably in the ratio 1 to 2 or higher, together with a small quantity of a conducting acid or salt which produces a non-colloidal solution, for example, boric acid, tartaric acid, citric acid or sulphuric acid. The voltage should be not less than 2 or more than 4, the current density about 2 to 5 amps. per square dcm. and the temperature about 18‹ C.
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