Electrodeposition of Mixed Metal Oxides from the Eutectic Sodium‐Potassium Nitrate Melt

Mixed yttrium‐copper oxides, some containing several percent barium, have been deposited cathodically on CuO / Cu substrates from eutectic Na‐K nitrate melts (300°C) containing dissolved Y 3+ and Ba 2+ nitrate species. Cobalt oxide ( Co 3 O 4 ) has also been deposited from this system by cathodic reduction of Co 3+ nitrate ions at a Pt electrode. Available data for Na‐K nitrate melts have been summarized to facilitate the design of schemes for deposition of various mixed metallic oxides.