Abstract
Peculiarities of iron plating bath prepared by ferric sulfate, triethanolamine and sodium hydroxide were studied. The main constituent of this bath was found, by absorption spectrum of electrolyte and paper iono-phoresis, to be an organic coordination complex anion charged minus three in which 2mols of triethanolamine were chelatede to Fe+++. Suitable concentration of the complex anion in the bath should be more than 0.2mol/l, and good adherent bright deposits were obtained at every current dencity between 0.5 and 10A/dm2 at room temperature, but cathode current effeciency was lower than 20%.