In this study, the mechanism of electrochemical reduction of Ta ions was investigated from the LiF-KF-K2TaF7 molten electrolyte by using the cyclic voltammetry technique. The effect of temperature, cathode potential and concentration of K2TaF7 on the reduction mechanism of Ta is examined and discussed. It was shown that at low temperature (<710 degrees C) the reduction process of K2TaF7 into Ta metal was realized in two-steps: the first step (R-1) was a two-electron reduction, which produces trivalent tantalum from dissolved [TaF6](-). In the second reaction(R-2), five-electrons are consumed to produce the Ta metal from [TaF7](2-). As the temperature increases, the reaction of R-1 decreases and the reaction of R-2 tends to increase. Those results are consistent with the reported K2TaF7 phase change on the temperature interval 512 similar to 771 degrees C. The Ta reduction mechanisms and the alloy coating film studies proposed in this paper also contributed to the significant enhancement of corrosion resistance. (C) 2018 The Electrochemical Society.