Corrosion and Leaching Behaviours of Sn-0.7Cu-0.05Ni Lead-Free Solder in 3.5 wt.% NaCl Solution

Table 1

Summary of corrosion parameters of metal alloys in 3.5 wt.% NaCl solution.

Sample	(V) versus Ag/AgCl	(µA/cm^2)	(kΩ)	CR; (mm/yr) × 10^−2
Sn-Cu-Ni		8.98	14.94	4.87
Sn-Ag-Cu		3.06	43.86	1.71
Sn-Cu		3.91	28.26	2.07
Sn-Pb		0.39	805.25	0.19
Sn		0.55	406.02	0.23

: corrosion potential, : corrosion current density, : polarization resistance, and CR: corrosion rate.