Effect of Annealing on the Microstructure, Hardness, Electrical Conductivity, and Corrosion of Copper Material before Accumulative Roll Bonding Processes

Table 8

Polarization data for copper during the ARB experiment with heated and unheated samples.

	Ecorr (V)	Jcorr (A/cm^2)	Corrosion rate (mm/year)	Polarization resistance (Ω)
1^st pass heated (Cu-2)	−0.33638	0.00023071	2.6808	158.69
2^nd pass heated (Cu-3)	−1.1647	0.0010847	12.604	233.75
1^st pass unheated (Cu-4)	−0.26012	0.0001118	1.2991	1772.7
2^nd pass unheated (Cu-5)	−1.2601	0.0026541	30.84	146.21
Unrolled and unheated (Cu-1)	−0.43066	0.000010429	0.12118	6011.1