PROCESS FOR CONTINUOUS ELECTRODEPOSITION OF CHROMIUM METAL AND CHROMIUM OXIDE ON METAL SURFACES

摘要

In the continuous electrodeposition of chromium metal and chromium oxide on metal surfaces, the codeposition of chromium and its oxide, inert and insoluble, is obtained from the same bath and at high current density by using a number of cycles of impressed cathodic current and defined ranges of electrolyte velocities in the deposition cell. In this manner, a product is obtained wherein a specific quantitative relationship between chromium metal and chromium oxide ensures corrosion resistance superior to that obtainable in known products.