Table 3 Optimal adjustable coefficients (ai) from nonlinear regression of Eq. 14.

From: Effect of acid proticity on the thermodynamic parameters of charge transfer resistance in corrosion and passivation of nickel based glass alloy

Acid

a0

a1

a2

R-square

χ-square

 

–

K

K2

–

–

HCl

38.2266

− 2.61907 × 104

5.22150 × 106

0.99929

0.00073

H2SO4

19.7075

− 1.84969 × 104

4.57233 × 106

0.99987

0.00017

H3PO4

− 2.1065

− 6.78931 × 103

3.06105 × 106

0.99753

0.00153

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