Electrodeposition of Nickelframe0Molybdenum Alloys from Ammonium Citrate Baths Containing Intermedia |
03.09.2008 г. |
Electrodeposition of NickelMolybdenum Alloys from Ammonium Citrate Baths Containing Intermediate Valence Molybdenum Compounds M. P. Pavlov, N. V. Morozova, and V. N. Kudryavtsev Mendeleev University of Chemical Engineering, Miusskaya pl. 9, Moscow, 125047 Russia Received September 20, 2006 Abstract — Electrodeposition of a Ni–Mo alloy under different electrolysis conditions, such as pH and temperature from ammonium citrate baths containing intermediate-valence molybdenum compounds is studied. The effect of differing molybdenum compounds (oxidation degrees of +6, +5, and +3) on the alloy formation makes possible controlling the alloy composition and the current efficiency, by varying the concentration ratio of molybdenum in different states of the oxidation. The prospects for the formation of deposits of adequate quality (compact, with no edge effects) with the current efficiency of nearly 80% are demonstrated. PACS numbers: 68.35.Ct; 81.15.Pq; 82.47.–a DOI: 10.1134/S0033173207050074
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