Preparation and microstructure of CaMoO{sub}4 ceramic films prepared through electrochemical technique

摘要

Crystallized calcium molybdate films have been prepared on molybdenum foils by electrochemical method under galvanostatic condition. The influences of the processing parameters on the growth of the films were studied experimentally. The current density controls the dissolution of molybdenum which associated with the concentration of ((MoO{sub}4)){sup}(2-). The more Ca{sup}(2+) exists in the alkaline solution, the easier the CaMoO{sub}4 film is formed. The temperature of the solution affects the reaction rate. These parameters of the electrochemical reaction affect the morphologies of CaMoO{sub}4 films markedly. Intergrowth of the crystalline grains of the film is observed in the rapid crystalline growth mode.