Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings

Table 2

Corrosion current density (i_corr) and corrosion potential (E_corr) of as-prepared Ni45 coatings in 0.5 M NaCl and 0.5 M NaCl + 0.5 mol/L H₂SO₄ solutions.

Coatings	0.5 M NaCl		0.5 M NaCl + 0.5 M H2SO4
	Ecorr (mVSCE)	icorr (μA·cm^−2)	Ecorr (mVSCE)	icorr (μA·cm^−2)
C1	−786.7 ± 9.8	8.40 ± 0.21	−133.6 ± 2.7	68.01 ± 1.78
C2	−666 ± 8.3	5.62 ± 0.14	−113.2 ± 2.4	63.15 ± 1.58
C3	−441.2 ± 5.5	3.74 ± 0.11	−109.3 ± 2.3	56.97 ± 1.46