“…The FFC process is a method to obtain metals and alloys by direct electro-deoxidation of their respective oxides or mixtures of oxides in chloride-based molten salts, which should be a much easier, less expensive and more environmentally friendly way [2,[17][18][19][20][21]. Many metals and alloys have been produced by using this process, such as Nb [17,[22][23][24], Ta [2,8,25], Ti [6,20,21,26], Al [27], Nb-Sn [18], Ni-Ti [28], Fe-Ti [29], Ce-Ni [30] and La-Ni [31,32]. Additionally, the possible mechanism for the electro-deoxidation process has been discussed [20][21]23,33,34], and some models also has been applied to understand the process [35,36].…”