912,950. Electrodepositing iron-chromium alloys. YAWATA IRON & STEEL CO. Ltd. March 19, 1959 [March 20, 1958], No. 9644/59. Class 41. A method of electro-depositing an ironchromium alloy plate on a metallic cathode comprises electrolysing an aqueous bath containing either bivalent or trivalent chromium and bivalent iron ions and an additional' agent which comprises formic acid or a formate which imparts a buffering and a reducing action thereto. In an example a bath containing trivalent chromium sulphate, urea, ammonium sulphate, ferrous sulphate and formic acid having a pH of 1.5 was electrolysed between a magnetic iron oxide anode and a soft steel cathode using a cathode current density of 30 amps. per square decimeter. A 50-50 iron chromium alloy plating was thereby obtained.
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