Table 8 EIS parameters attained after fitting the data for Ni-P, Ni-P-Y2O3 (0.25 g/L, 0.50 g/l and 0.75 g/L).

From: Mechanical properties and corrosion resistance of electroless deposited Ni-P-Y2O3 nanocomposite coatings for industrial applications

Sample

Rpo (Ω cm2)

CPE1 × 10− 6 (Fcm− 2 sα−1)

Rct (Ω cm2)

CPE2 × 10− 6 (F cm− 2 sα−1)

m

n

Rsoln (Ω)

Corrosion protection efficiency (PE%)

Carbon steel

–

–

448

206.4

–

–

–

–

Ni-P

3016

108.2

1251

11.52

0.91

0.43

7.196

64

Ni-P-0.25 g/L Y2O3

1425

237.9

3525

518.3

0.75

0.99

6.448

87

Ni-P-0.50 g/L Y2O3

3010

221.3

5045

782.9

0.76

0.97

7.435

91

Ni-P-0.75 g/L Y2O3

1244

84.90

7699

190.0

0.95

0.48

7.423

94

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