CONCLUSIONS

• DL-EPR tests allow to obtain a quantitative measure of the structural modification of the materials as the duration of heat treatment increases. The good sensitiveness of this technique in the evaluation of the degree of sensitisation is confirmed by the comparison with the results obtained with the morphological analyses.

• Polarisation measurements allow to obtain a quantitative measure of the structural modification of the materials as the duration of heat treatment increases. The good sensitiveness of this technique in the evaluation of the degree of sensitisation is confirmed by the comparison with the results obtained with the DL-EPR tests.

• Impedance spectroscopy cannot be used as method to detect the degree of sensitisation because, as intergranular corrosion occurs, the impedance values fall down drastically and it is not sensitive for the evaluation of the area subjected to the dissolution. However, this technique helps to understand the way the other measurements work.

Diapositiva precedente

Torna alla prima diaposiva

Visualizza versione grafica