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Table 2 Adsorption parameters on CDI alloys as cast with the addition of investigated inhibitors in 1M H2SO4 solution from W.L. measurements

From: Corrosion potential and theoretical studies of fabricated Schiff base for carbidic austempered ductile iron in 1M H2SO4 solution

Isotherm

CADI alloys

R2

Kads, mol−1

∆Gads, kJmol−1

Langmuir

1% Cr

0.9549

5.0302

− 13.953

1.5% Cr

0.9604

2.1978

− 11.902

1% Cr-Nb

0.9930

0.7443

− 9.219

1.5% Cr-Nb

0.9414

0.2625

− 6.637

Temkin

1% Cr

0.6112

0.6271

− 8.795

1.5% Cr

0.9934

0.4328

− 7.875

1% Cr-Nb

0.6076

0.7805

− 9.336

1.5% Cr-Nb

0.9672

0.1337

− 4.965

Freundlich

1% Cr

0.6043

0.1723

− 5.594

1.5% Cr

0.9916

0.1163

− 4.620

1% Cr-Nb

0.5967

0.0818

− 3.748

1.5% Cr-Nb

0.9752

0.3817

− 7.564

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BMC Chemistry

ISSN: 2661-801X

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