Corrosion Performance of Cu-Based Coins in Artificial Sweat

Table 3

Electrochemical parameters of the Cu-based coins evaluated in artificial sweat at 37°C.

Alloy	(mV)	ba; (mV/Dec)	bc; (mV/Dec)	(mA/cm^2)	(Ohms-cm^2)	Zn/Ni; ratio
Cu	−310	300	69	0.01110	2276	—
23Ni	−285	207	67	0.00734	3085	—
32Zn	−347	355	67	0.00854	2950	—
10Ni25Zn	−332	334	72	0.00941	3298	2.5
13Ni17Zn	−301	343	62	0.00810	3236	1.3
15Ni22Zn	−323	230	58	0.00573	2900	1.47
8Ni27Zn	−271	330	75	0.00406	4880	3.37
6Al2Ni	−344	244	70	0.00624	4708	—
13Zn6Mn4Ni	−346	333	68	0.00724	3350	3.25
6Zn5Al1Sn	−360	195	61	0.00362	4152	—