抄録
We experimented with investigation of the model of electrochemical reduction in electrochemical treatment on Bi2Sr2CaCu2OY superconductor by using methyl alcohol as solvent and three materials: Ca(NO3)2⋅4H2O, CuSO4⋅5H2O and Cu(NO3)2⋅3H2O as solutes. The samples before and after the treatment were investigaited by X-ray diffraction, fluorescent X-ray analysis and resistivity measurement.
As a result, we suggested two model of reduction such as
(1)Bi2Sr2CaCu2O8+ (x+y)Ca2++ 2(x+y)e-→Bi2Sr2Ca1+xCu2O8+ yCa
(2)Bi2Sr2CaCu2O8+ (x+y)Cu2++ 2(x+y)e-→ Bi2Sr2CaCu2+XO8+ yCu
where (x+y) is constant in each quantity of electricity and y is much greater than x. However x and y were so randomly variable that it was very difficult to control of electrochemical reduction.
