| 摘要 |
A sinusoidal voltage V is applied between two measurement points on two zirconium alloy elements (2, 2'), the strength I of a sinusoidal current flowing between the measurement points is measured, the impedance Z = V/I of the measurement area of the elements (2, 2') is determined, and the resulting impedance is compared with at least one reference value. The testing device comprises a cell (5) containing an electrolyte (6) in which the two zirconium alloy elements (2, 2') are immersed, as well as a power supply and impedance measurement module (16). A measurement may be performed on a single element (2) by means of an electrode immersed in the electrolyte (6).
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